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color

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By Targets:	Amyloid-β (1) Antibiotic (3) Apoptosis (1) Bacterial (5) Beta-lactamase (2) Biochemical Assay Reagents (32) c-Fms (1) Cytochrome P450 (1) DNA/RNA Synthesis (1) Drug Intermediate (2) Endogenous Metabolite (4) Environmental Pollutants (8) Fluorescent Dye (73) Fungal (3) Glutathione Peroxidase (1) Glycosidase (1) HIV Integrase (2) Isotope-Labeled Compounds (1) MOFs (1) Nucleoside Antimetabolite/Analog (2) Parasite (1) Phosphatase (1) Photosensitizer (1) Reactive Oxygen Species (ROS) (1) Reference Standards (5) Thrombin (1) UGT (1) VSV (1)
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Click Chemistry:	Alkynes (1)

126

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Click Chemistry

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-108913

Nitrocefin 2 Publications Verification	Beta-lactamase Antibiotic Bacterial	Infection
Nitrocefin is a highly activated, chromogenic cephalosporin derivative. Nitrocefin is a chromogenic β-lactamase substrate. Nitrocefin undergoes a distinctive color change from yellow to red as the amide bond in the β-lactam ring is hydrolyzed by β-lactamase. Nitrocefin is used in competitive inhibition studies in developmental work on β-lactamase-resistant antibiotics .

HY-D0169

Phenol Red 1 Publications Verification Phenolsulfonephthalein	Environmental Pollutants Fluorescent Dye	Others
Phenol red (Phenolsulfonephthalein) is a pH indicator dye, relying on a distinct color change from pink to yellow in case of a positive reaction .

HY-118462

Coelenteramine 400a Coelenterazine 400a; Bisdeoxycoelenterazine	Fluorescent Dye	Others
Coelenteramine 400a (Coelenterazine 400a), a derivative of Coelenterazine, is a Renilla luciferase (RLuc) substrate. In the presence of Coelenteramine 400a, RLuc can emit blue light at 395 nm . Coelenterazine 400a will causes color change in the bioluminescence reaction of Rluc by replacing the sulfur and oxygen heteroatoms of the methylene bridge. Coelenterazine 400a provides higher signal resolution and can be used in the research of bioluminescence resonance energy transfer (BRET) .

HY-D0018

DCIP sodium 1 Publications Verification Dichlorophenylindophenol sodium; DCPIP sodium; Indochlorophenol sodium	Biochemical Assay Reagents	Others
DCIP sodium is a blue dye commonly used in various biochemical and biotechnological applications as an indicator of redox reactions. DCIP sodium has unique chemical properties that change color according to the oxidation state of the substance being tested. It is commonly used in enzyme assays, such as measuring the activity of succinate dehydrogenase, or in protein quantification methods, such as the Lowry assay.

HY-W014449

4-Nitrophenyl butyrate	Biochemical Assay Reagents	Others
4-Nitrophenyl butyrate consists of butyric acid chains esterified with 4-nitrophenol groups, thus giving it a yellow color. This compound is commonly used as a substrate in enzyme assays to measure esterase and lipase activity. When these enzymes cleave the ester bond, the nitrophenol group is released and the color changes from yellow to orange. Thus, the rate of color change can be used to determine enzyme activity. In addition, 4-Nitrophenyl butyrate can also be used as organic synthesis reagent and dye intermediate.

HY-150145A

Cy5-UTP sodium (10 mM in water)	Nucleoside Antimetabolite/Analog Fluorescent Dye	Others
Cy5-UTP sodium (10 mM in water) is a fluorescently labeled ribonucleotide triphosphate that can be used as a substrate for terminal deoxynucleotide transferase (TdT). Cy5-UTP sodium can be used to label RNA probes generated in vitro (Ex/Em: 650/665 nm). Cy5-UTP sodium can be applied in FISH, multi-color fluorescence analysis, especially in dual-color expression arrays combined with Cy5-UTP .

HY-D1683

NBD-PE 2 Publications Verification	Fluorescent Dye	Others
NBD-PE is an effective lipid fluorescent probe (Excitation/Emission: 465/535 nm; Color: Green). NBD-PE offers a wide array of applications in membrane and cell biology .

HY-N7476

Colominic acid sodium salt Polysialic acid sodium salt	Antibiotic	Infection Inflammation/Immunology
Colominic acid sodium salt (Polysialic acid sodium salt) could be naturally isolated from the cell wall of Escherichia coli and animals, gives a red color which has an absorption maximum at 530 nm. Colominic acid sodium salt (Polysialic acid sodium salt) possesses anti-bacterial activity .

HY-D1247

Hydroxynaphthol Blue	Biochemical Assay Reagents	Others
Hydroxynaphthol Blue is an azo dye and serves as a metal indicator. Hydroxynaphthol Blue binds to specific metal ions to form stable complexes with distinct color and fluorescence properties. Hydroxynaphthol Blue is used for the visual monitoring of isothermal nucleic acid amplification results. A visible color difference appears between positive and negative nucleic acid amplification reactions, allowing result discrimination by the naked eye without opening the reaction tube .

HY-N1347

Robinetin 1 Publications Verification 3,3',4',5',7-Pentahydroxyflavone	Fungal HIV Integrase Bacterial	Infection
Robinetin (3,3',4',5',7-Pentahydroxyflavone), a naturally occurring flavonoid with remarkable ‘two color’ intrinsic fluorescence properties, has antifungal, antiviral, antibacterial, antimutagenesis, and antioxidant activity. Robinetin also can inhibit lipid peroxidation and protein glycosylation .

HY-D2348A

ACE TFA	Fluorescent Dye	Infection
ACE TFA is a low-background, photostable fluorophore with nanomolar binding affinity for the Okra RNA aptamer. ACE TFA enables clear visualization of mRNA in live bacteria and mammalian cells, including tracking the trafficking of mRNA to stress granules and dual-color super-resolution imaging of RNA in live cells. (Ex=488 nm, Em=555 nm) .

HY-D0284

Pigment Yellow 139	Fluorescent Dye	Others
Pigment Yellow 139 is a biological dye and indicator. Pigment Yellow 139 is an organic pigment and an additive for color filters of liquid crystal displays. When formulated in a dye-pigment hybrid system, Pigment Yellow 139 can form color filters with specific chromaticity coordinates, brightness, contrast, and average particle size .

HY-D0221

2,4,6-Tri-2-pyridinyl-1,3,5-triazine NSC 112125; 2,4,6-Tipyidyl-s-tiazie	MOFs Fluorescent Dye	Others
2,4,6-Tri-2-pyridinyl-1,3,5-triazine (NSC 112125) is a colorimetric reagent for detecting iron. 2,4,6-Tri-2-pyridinyl-1,3,5-triazine forms a complex with Fe (II) and can be quantified as a measure of iron concentration by colorimetric detection at 594 nm .

HY-151644

Fluorescein hydrazide 1 Publications Verification	Fluorescent Dye	Others
Fluorescein hydrazide is a sensitive fluorescent probe for Hg ²⁺ and Co ²⁺ that induces obvious color changes and fluorescence changes. Fluorescein hydrazide can be prepared by the reaction of fluorescein and hydrazine. Fluorescein hydrazide exhibits an excitation wavelength of 508 nM and an emission wavelength of 531 nM [2][3].

HY-D0165

Naphthoresorcinol 1,3-Dihydroxynaphthalene	Fluorescent Dye	Others
Naphthoresorcinol (1,3-Dihydroxynaphthalene) is a fluorescent dye (λ_ex=330 nm, λ_em=380 nm) that can react with the NPPD (a tracer) and concentrated HCl and develop a red color. Naphthoresorcinol could be used as a background electrolyte (BGE) to determine the carbohydrates .

HY-D0169A

Phenol Red sodium salt 1 Publications Verification Phenolsulfonephthalein sodium salt	Fluorescent Dye Glutathione Peroxidase	Others
Phenol red (Phenolsulfonephthalein) sodium salt is a pH indicator dye. Phenol Red sodium salt is also an antagonist of rat P2X1R. Phenol Red sodium salt enhances the halogenating activity of myeloperoxidase. Phenol Red sodium salt shows a distinct color change from pink to yellow in a positive pH reaction .

HY-125809

4-(1-Phenylethyl)resorcinol	Biochemical Assay Reagents	Others
4-(1-Phenylethyl)resorcinol is a skin lightening agent used in cosmetics. It works by inhibiting the production of melanin, the pigment that gives skin its color. This helps reduce the appearance of dark spots, hyperpigmentation and uneven skin tone. 4-(1-Phenylethyl)resorcinol is considered safe for cosmetic use and is approved for use in several countries.

HY-W110910

Eriochrome black T, Indicator	Biochemical Assay Reagents	Infection
Eriochrome black T, Indicator is a complexing agent for metal ions (e.g., Ca ²⁺, Mg ²⁺) and is used as an indicator in complexometric titrations. Eriochrome black T, Indicator forms colored complexes with metal ions through covalent coordination bonds, and indicates the endpoint of the titration by color change. Eriochrome black T, Indicator can be used as an anionic azo dye in photocatalytic degradation studies to evaluate the performance of photocatalysts. The reaction solution of Eriochrome black T, Indicator combined with Mg ²⁺ is initially purple. During loop-mediated isothermal amplification (LAMP), the color changes from purple to sky blue due to the consumption of Mg ²⁺ by the formation of magnesium pyrophosphate, indicating a positive reaction. The optimal concentration of Eriochrome black T, Indicator in LAMP is 60 μM, and the detection limit for Mycobacterium tuberculosis is 1 pg DNA/reaction .

HY-W110794

Crystal violet, IND (0.0-2.0)	Environmental Pollutants Biochemical Assay Reagents	Others
Crystal violet, IND (0.0-2.0) is a specialized indicator suitable for strongly acidic systems, which reflects changes in pH within the range of 0.0-2.0 through color changes. Crystal violet, IND (0.0-2.0) is widely used in acid-base titration, chemical analysis, and industrial testing fields .

HY-W133919

Aniline Blue sodium	Environmental Pollutants Biochemical Assay Reagents	Others
Aniline Blue sodium is a water-soluble dye commonly used as a biological stain for the detection of nucleic acids and proteins in various laboratory procedures such as electrophoresis and microscopy. Aniline Blue sodium has unique chemical properties that allow it to bind to specific cellular components, producing a color change that facilitates their visualization and analysis.

HY-W087928

Bromocresol purple	Biochemical Assay Reagents	Others
Bromocresol purple is a pH indicator, whose color changes from yellow to purple when the pH increases from 5.2 to 6.8. Bromocresol purple can be used for detecting yeast cells with plasma membrane damage and measuring serum albumin concentrations .

HY-D2348

ACE	Fluorescent Dye	Infection Others
ACE is a low-background, photostable fluorophore with nanomolar binding affinity for the Okra RNA aptamer. ACE enables clear visualization of mRNA in live bacteria and mammalian cells, including tracking the trafficking of mRNA to stress granules and dual-color super-resolution imaging of RNA in live cells. (Ex=488 nm, Em=555 nm) .

HY-B1529A

Citric acid triammonium Maximum Cited Publications 8 Publications Verification Triammonium citrate	Apoptosis Endogenous Metabolite Bacterial	Others Cancer
Citric acid triammonium (Triammonium citrate) is formed by Citric acid (HY-N1428) reacting with ammonia in a molar ratio of 1:3. Citric acid triammonium can be used as the carbon source to prepare carbon quantum dots (CDs). Citric acid triammonium with higher nitrogen components might promote the nitrogen-based functional groups in CDs, leading to a more efficient emission-color tunability .

HY-152073

BETA-1	Fluorescent Dye	Others
BETA-1 is the first twisted intramolecular charge transfer (TICT)-aggregation-induced emission (AIE) integration molecule. BETA-1 emits cyan fluorescence in lipid droplets (LDs) and red fluorescence in mitochondria. BETA-1 can be used for the simultaneous and dual-color imaging of LDs and mitochondria in vivo and in vitro .

HY-W127769

Rose-β-D-Gal Salmon-Gal	Fluorescent Dye	Others
Rose-β-D-Gal is a chromogenic substrate, is also a β-galactosidase substrate. Rose-β-D-Gal creates a pink/magenta color after the reaction and has been used for detection of β-gal activity .

HY-128369

Acid Yellow 36 Metanil Yellow	Environmental Pollutants Cytochrome P450	Others
Acid Yellow 36 (Metanil Yellow) is an azo dye and a pH indicator. Acid Yellow 36 changes its color from red at pH 1.2 to yellow at pH 2.3. Acid Yellow 36 is used in the leather, paper and textile industries. Acid Yellow 36 acts as a bifunctional inducer of specific isozymes of P-450 and cytosolic enzymes .

HY-D1137

C.I. Pigment yellow 110	Fluorescent Dye
C.I. Pigment yellow 110 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D1490

Fast red TR salt hemizinc chloride	Fluorescent Dye	Others
Fast red TR salt hemi (zinc chloride) is a diazonium dye with red color .

HY-150145

Cy5-UTP	Nucleoside Antimetabolite/Analog Fluorescent Dye	Others
Cy5-UTP is a fluorescently labeled ribonucleotide triphosphate that can be used as a substrate for terminal deoxynucleotidyl transferase (TdT). Cy5-UTP can be employed to label RNA probes generated in vitro (Ex/Em: 650/665 nm). Cy5-UTP can be applied in FISH, multi-color fluorescence analysis, especially in dual-color expression arrays that combine with Cy5-UTP .

HY-D0411

Xylene Fast Yellow 2G Acidyellow 17; Yellow 2G	Biochemical Assay Reagents	Others
Xylene Fast Yellow 2G is a synthetic dye belonging to the class of azo dyes. It is commonly used in the textile industry to dye natural and synthetic fibers as well as in the paper and ink industries. Xylene Fast Yellow 2G produces a bright yellow color that is fade and wash resistant and can be applied to textiles by a variety of methods including dipping, padding and printing.

HY-D0812

Xylenol blue	Fluorescent Dye Biochemical Assay Reagents	Others
Xylenol Blue is a sulfonephthalein dye. It exhibits observable color changes in response to variations in pH. Xylenol Blue undergoes two distinct color transitions across two specific pH ranges: an acidic range and an alkaline range. In a neutral solution, Xylenol Blue appears yellow (at pH 8); in a strongly acidic medium, its color shifts to red (at pH 2.8); and in an alkaline medium, the yellow hue transitions to blue (at pH 9.6) .

HY-D0429

C.I. Pigment red 5	Fluorescent Dye
C.I. Pigment red 5 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-128545

Nitrazine yellow Nitrazine paper; Phenaphthazine	Biochemical Assay Reagents	Others
Nitrazine yellow (Nitrazine paper; Phenaphthazine) is a pH indicator. The color of Nitrazine yellow changes from yellow to blue in the pH range from 6.0 to 7.0. Nitrazine yellow is a kind of biological materials or organic compounds that are widely used in life science research .

HY-D0228

4-(4-Nitrophenylazo)resorcinol Azo Violet; Magneson I	Fluorescent Dye	Others
4-(4-Nitrophenylazo)resorcinol (Azo Violet) is an azo purple dye used experimentally as a pH indicator, showing yellow when the pH value is lower than 11 and purple when the pH value is higher than 13. In slightly alkaline or alkaline environments, it also turns dark blue in the presence of magnesium salts. Azo Violet can also be used to test for the presence of ammonium ions. The color of the ammonium chloride or ammonium hydroxide solution will change depending on the concentration of azo violet used .

HY-D0531

C.I. Pigment red 123	Fluorescent Dye
C.I. Pigment red 123 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0960

C.I. Solvent Blue 43	Fluorescent Dye
C.I. Solvent Blue 43 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-W775174

Citrus red 2 C.I. Solvent red 80	Fluorescent Dye
Citrus red 2 (CI Solvent red 80) is a synthetic dye with coloring power and antioxidant activity. Citrus red 2 can be used in food and cosmetics to provide a bright color to the product. Citrus red 2 is also used as a reference substance for testing and analysis in certain situations.

HY-N8502

Urdamycin A	Fluorescent Dye	Cancer
Urdamycin A (Compound 3b) is an angucycline antibiotic that can be isolated from Streptomyces fradiae. Urdamycin A is an orange indicator with a change of the color to ultramarine blue at pH 7.7. Urdamycin A has anticancer activity with IC₅₀s of 2.4 and 0.55 μg/mL in proliferation and stem cell assays, respectively .

HY-W206911

Erythrosin B sodium salt	Environmental Pollutants Biochemical Assay Reagents	Others
Erythrosin B sodium salt, is a synthetic azo dye commonly used as a food colorant and textile dye. It is a water-soluble compound that produces a bright red color and is often used to improve the appearance of products. Erythrosin B sodium salt is also used in the textile industry for dyeing wool, silk and leather. However, it has been linked to potentially negative health effects, such as allergic reactions and hyperactivity in children.

HY-143618

photoCORM-2	Biochemical Assay Reagents	Cancer
photoCORM-2 (compound 3) is a single carbon monoxide releasing molecule (CORM). photoCORM-2 exhibits good cellular uptake and real-time monitoring ability of CO uncaging by a color change approach. photoCORM-2 has anti-tumor activity .

HY-D0405

C.I. Pigment yellow 74	Fluorescent Dye
C.I. Pigment yellow 74 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0457

C.I. Solvent red 179	Fluorescent Dye
C.I. Solvent red 179 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-P3836

[His7] Corazonin	Endogenous Metabolite	Neurological Disease
[His7] Corazonin, a neurohormone, induces dark color in the cuticle and epidermis of Locusta migratoria .

HY-D0008

Brilliant green	Bacterial Fungal Parasite	Infection
Brilliant green is a cationic dye used to color silk and wool. Brilliant green inhibits propagation of mold, intestinal parasites and fungus. Brilliant green is effective against Gram-positive bacteria .

HY-D2337

Quinophthalone	Fluorescent Dye	Inflammation/Immunology
Quinophthalone is a dye with distinctive greenish yellow color. Quinophthalone is used as coloring agents for various materials. Quinophthalone is a strong sensitizer in guinea pigs, and its threshold concentration for induction and challenge is 10 ppm .

HY-D0312

Mordant Blue 13 Sunchromine Fast Blue MB	Biochemical Assay Reagents	Others
Mordant Blue 13 is a synthetic dye used in the textile industry. It belongs to a class of metal complex dyes that are able to form strong bonds with fabrics and other materials. Mordant Blue 13 is commonly used for dyeing cotton, wool and silk fibres, it produces a fast blue color. It can be applied to textiles by a variety of methods including impregnation, padding and printing.

HY-118462A

Coelenteramine 400a hydrochloride Coelenterazine 400a hydrochloride; Bisdeoxycoelenterazine hydrochloride	Fluorescent Dye	Others
Coelenteramine (Coelenterazine) 400a hydrochloride, a derivative of Coelenterazine, is a Renilla luciferase (RLuc) substrate. In the presence of Coelenteramine 400a hydrochloride, RLuc can emit blue light at 395 nm . Coelenteramine 400a hydrochloride will causes color change in the bioluminescence reaction of Rluc by replacing the sulfur and oxygen heteroatoms of the methylene bridge. Coelenteramine 400a hydrochloride provides higher signal resolution and can be used in the research of bioluminescence resonance energy transfer (BRET) .

HY-D0488

C.I. Pigment orange 36	Fluorescent Dye
C.I. Pigment orange 36 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0686

C.I. Pigment red 221	Fluorescent Dye
C.I. Pigment red 221 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0450

C.I. Pigment red 112	Fluorescent Dye
C.I. Pigment red 112 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

Cat. No.	Product Name

HY-E0076

96-well Storage Plate	0 compounds
MCE 96-well storage plates are the ideal storage plate for compound library. Conical bottom (V) improves sample recovery and decreases dead volume. MCE 96-well storage plates are completely designed according to ANSI/SBS standards and can be adapted to various testing equipment and automatic workstations.

HY-L221

Cosmetic Ingredient Compound Library

622 compounds

Cosmetics are complex mixtures formulated through the rational blending and processing of various natural, synthetic, or extracted raw materials. The ingredients used in cosmetics are diverse in type and functionality. Based on their properties and applications, cosmetic ingredients can generally be classified into two main categories: base materials and auxiliary ingredients. The former constitutes the primary component of cosmetics, accounting for a significant proportion in formulations and serving as the key functional substances. Auxiliary ingredients, on the other hand, play roles in shaping the product, ensuring stability, or imparting color, fragrance, and other specific characteristics.Establishing a systematic ingredient database is of great significance for cosmetic research and development. By analyzing the physicochemical properties (such as oil-water partition coefficients and molecular weight distribution), biological activity mechanisms (such as antioxidant pathways and cellular signaling regulation), and compatibility of ingredients, the database can provide precise guidance for formulation design. This approach helps shorten the development cycle of cosmetic/skincare products and reduces trial-and-error costs.

MCE offers 622 types of cosmetic ingredient compounds, including antioxidants, humectants, emulsifiers, film-forming agents, and more.

Cat. No.	Product Name	Type

HY-D0169

Phenol Red 1 Publications Verification Phenolsulfonephthalein	Fluorescent Dyes
Phenol red (Phenolsulfonephthalein) is a pH indicator dye, relying on a distinct color change from pink to yellow in case of a positive reaction .

HY-118462

Coelenteramine 400a

Coelenterazine 400a; Bisdeoxycoelenterazine

Fluorescent Dyes

Coelenteramine 400a (Coelenterazine 400a), a derivative of Coelenterazine, is a Renilla luciferase (RLuc) substrate. In the presence of Coelenteramine 400a, RLuc can emit blue light at 395 nm . Coelenterazine 400a will causes color change in the bioluminescence reaction of Rluc by replacing the sulfur and oxygen heteroatoms of the methylene bridge. Coelenterazine 400a provides higher signal resolution and can be used in the research of bioluminescence resonance energy transfer (BRET) .

HY-D0018

DCIP sodium

1 Publications Verification

Dichlorophenylindophenol sodium; DCPIP sodium; Indochlorophenol sodium

Fluorescent Dyes

DCIP sodium is a blue dye commonly used in various biochemical and biotechnological applications as an indicator of redox reactions. DCIP sodium has unique chemical properties that change color according to the oxidation state of the substance being tested. It is commonly used in enzyme assays, such as measuring the activity of succinate dehydrogenase, or in protein quantification methods, such as the Lowry assay.

HY-D1683

NBD-PE 2 Publications Verification	Fluorescent Dyes
NBD-PE is an effective lipid fluorescent probe (Excitation/Emission: 465/535 nm; Color: Green). NBD-PE offers a wide array of applications in membrane and cell biology .

HY-D1224

Chlorophenol red-β-D-galactopyranoside

2 Publications Verification

CPRG

Fluorescent Dyes

Chlorophenol red-β-D-galactopyranoside (CPRG) is an efficient and sensitive chromogenic substrate for β-galactosidase (HY-P2869), widely used in colorimetric assays. Chlorophenol red-β-D-galactopyranoside itself appears pale yellow. When it is specifically hydrolyzed by β-galactosidase, it releases chlorophenol red. The released chlorophenol red turns purple-red under alkaline or neutral pH conditions. This color change from yellow to red can be quantitatively detected at wavelengths of 540-572 nm using visible spectrophotometry .

HY-D2348A

ACE TFA	Fluorescent Dyes
ACE TFA is a low-background, photostable fluorophore with nanomolar binding affinity for the Okra RNA aptamer. ACE TFA enables clear visualization of mRNA in live bacteria and mammalian cells, including tracking the trafficking of mRNA to stress granules and dual-color super-resolution imaging of RNA in live cells. (Ex=488 nm, Em=555 nm) .

HY-D0284

Pigment Yellow 139	Fluorescent Dyes
Pigment Yellow 139 is a biological dye and indicator. Pigment Yellow 139 is an organic pigment and an additive for color filters of liquid crystal displays. When formulated in a dye-pigment hybrid system, Pigment Yellow 139 can form color filters with specific chromaticity coordinates, brightness, contrast, and average particle size .

HY-D0221

2,4,6-Tri-2-pyridinyl-1,3,5-triazine NSC 112125; 2,4,6-Tipyidyl-s-tiazie	Fluorescent Dyes
2,4,6-Tri-2-pyridinyl-1,3,5-triazine (NSC 112125) is a colorimetric reagent for detecting iron. 2,4,6-Tri-2-pyridinyl-1,3,5-triazine forms a complex with Fe (II) and can be quantified as a measure of iron concentration by colorimetric detection at 594 nm .

HY-151644

Fluorescein hydrazide 1 Publications Verification	Fluorescent Dyes
Fluorescein hydrazide is a sensitive fluorescent probe for Hg ²⁺ and Co ²⁺ that induces obvious color changes and fluorescence changes. Fluorescein hydrazide can be prepared by the reaction of fluorescein and hydrazine. Fluorescein hydrazide exhibits an excitation wavelength of 508 nM and an emission wavelength of 531 nM [2][3].

HY-D0165

Naphthoresorcinol 1,3-Dihydroxynaphthalene	Fluorescent Dyes
Naphthoresorcinol (1,3-Dihydroxynaphthalene) is a fluorescent dye (λ_ex=330 nm, λ_em=380 nm) that can react with the NPPD (a tracer) and concentrated HCl and develop a red color. Naphthoresorcinol could be used as a background electrolyte (BGE) to determine the carbohydrates .

HY-D0169A

Phenol Red sodium salt 1 Publications Verification Phenolsulfonephthalein sodium salt	Fluorescent Dyes
Phenol red (Phenolsulfonephthalein) sodium salt is a pH indicator dye. Phenol Red sodium salt is also an antagonist of rat P2X1R. Phenol Red sodium salt enhances the halogenating activity of myeloperoxidase. Phenol Red sodium salt shows a distinct color change from pink to yellow in a positive pH reaction .

HY-135712

Orange G

Acid Orange GG

Fluorescent Dyes

Orange G is an azo dye commonly found in textile wastewater and is mainly used for textile dyeing. Orange G has a coloring function and can give textiles a specific color. The stability and potential hazards of Orange G in the environment are often used to study the removal effects of various wastewater treatment technologies on difficult-to-degrade organic pollutants, especially the degradation of azo dyes. Related research focuses on how to destroy the azo bond of Orange G through chemical, physical or biological methods to achieve harmless treatment to solve the problem of textile wastewater pollution .

HY-W133919

Aniline Blue sodium	Fluorescent Dyes
Aniline Blue sodium is a water-soluble dye commonly used as a biological stain for the detection of nucleic acids and proteins in various laboratory procedures such as electrophoresis and microscopy. Aniline Blue sodium has unique chemical properties that allow it to bind to specific cellular components, producing a color change that facilitates their visualization and analysis.

HY-D2348

ACE	Fluorescent Dyes
ACE is a low-background, photostable fluorophore with nanomolar binding affinity for the Okra RNA aptamer. ACE enables clear visualization of mRNA in live bacteria and mammalian cells, including tracking the trafficking of mRNA to stress granules and dual-color super-resolution imaging of RNA in live cells. (Ex=488 nm, Em=555 nm) .

HY-W250147

Basic blue 26

Victoria blue B

Fluorescent Dyes

Basic blue 26 (Victoria blue B) is a synthetic cationic dye belonging to the class of triarylmethane dyes. It has a bright blue color and is commonly used as a colorant for a variety of applications, including textiles, paper and leather. Basic Blue 26 is also used as a biological stain for DNA and protein detection in laboratories. Due to its ability to bind negatively charged materials, it can be used as an indicator of the presence of specific molecules in biological samples. However, Basic blue 26 has been reported to have potentially harmful effects on human health and the environment and its use is regulated in some countries. Proper handling and disposal procedures are necessary to minimize its impact on the environment.

HY-D0233

Leucocrystal violet

Fluorescent Dyes

Leucocrystal violet is a cationic triarylmethane dye. Leucocrystal violet generates a colored purple product in the presence of hydrogen peroxide and horseradish peroxidase, or when oxidized by periodate under the catalysis of horseradish peroxidase. Leucocrystal violet serves as a chromogenic reagent for the determination of submicrogram-level hydrogen peroxide, with no interference from tryptophan, persulfate or chromate. Leucocrystal violet reacts with blood to produce a purple/violet color in the presence of hydrogen peroxide; it forms a very weak fluorophore when acting with whole blood in an unbuffered solution, with a maximum absorption wavelength of 630 nm and a maximum fluorescence emission wavelength of 665 nm upon excitation at 630 nm. Leucocrystal violet is widely used for staining blood residues on porous and non-porous materials .

HY-W127769

Rose-β-D-Gal Salmon-Gal	Fluorescent Dyes
Rose-β-D-Gal is a chromogenic substrate, is also a β-galactosidase substrate. Rose-β-D-Gal creates a pink/magenta color after the reaction and has been used for detection of β-gal activity .

HY-128369

Acid Yellow 36 Metanil Yellow	Fluorescent Dyes
Acid Yellow 36 (Metanil Yellow) is an azo dye and a pH indicator. Acid Yellow 36 changes its color from red at pH 1.2 to yellow at pH 2.3. Acid Yellow 36 is used in the leather, paper and textile industries. Acid Yellow 36 acts as a bifunctional inducer of specific isozymes of P-450 and cytosolic enzymes .

HY-D1137

C.I. Pigment yellow 110	Fluorescent Dyes
C.I. Pigment yellow 110 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D1490

Fast red TR salt hemizinc chloride	Fluorescent Dyes
Fast red TR salt hemi (zinc chloride) is a diazonium dye with red color .

HY-D0411

Xylene Fast Yellow 2G Acidyellow 17; Yellow 2G	Fluorescent Dyes
Xylene Fast Yellow 2G is a synthetic dye belonging to the class of azo dyes. It is commonly used in the textile industry to dye natural and synthetic fibers as well as in the paper and ink industries. Xylene Fast Yellow 2G produces a bright yellow color that is fade and wash resistant and can be applied to textiles by a variety of methods including dipping, padding and printing.

HY-D0812

Xylenol blue

Fluorescent Dyes

Xylenol Blue is a sulfonephthalein dye. It exhibits observable color changes in response to variations in pH. Xylenol Blue undergoes two distinct color transitions across two specific pH ranges: an acidic range and an alkaline range. In a neutral solution, Xylenol Blue appears yellow (at pH 8); in a strongly acidic medium, its color shifts to red (at pH 2.8); and in an alkaline medium, the yellow hue transitions to blue (at pH 9.6) .

HY-D0429

C.I. Pigment red 5	Fluorescent Dyes
C.I. Pigment red 5 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0228

4-(4-Nitrophenylazo)resorcinol

Azo Violet; Magneson I

Fluorescent Dyes

4-(4-Nitrophenylazo)resorcinol (Azo Violet) is an azo purple dye used experimentally as a pH indicator, showing yellow when the pH value is lower than 11 and purple when the pH value is higher than 13. In slightly alkaline or alkaline environments, it also turns dark blue in the presence of magnesium salts. Azo Violet can also be used to test for the presence of ammonium ions. The color of the ammonium chloride or ammonium hydroxide solution will change depending on the concentration of azo violet used .

HY-D0531

C.I. Pigment red 123	Fluorescent Dyes
C.I. Pigment red 123 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0960

C.I. Solvent Blue 43	Fluorescent Dyes
C.I. Solvent Blue 43 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-W206911

Erythrosin B sodium salt

Fluorescent Dyes

Erythrosin B sodium salt, is a synthetic azo dye commonly used as a food colorant and textile dye. It is a water-soluble compound that produces a bright red color and is often used to improve the appearance of products. Erythrosin B sodium salt is also used in the textile industry for dyeing wool, silk and leather. However, it has been linked to potentially negative health effects, such as allergic reactions and hyperactivity in children.

HY-W250143

Toluidine blue (ZnCl2)

Fluorescent Dyes

Toluidine blue (ZnCl2) is a basic thiazine dye commonly used as a biological stain for microscopy. It has a deep bluish-purple color and is commonly used to stain nucleic acids such as DNA and RNA, as well as to stain mast cells, cartilage, and other connective tissues. Toluidine blue (ZnCl2) stains the acidic components of these tissues, such as sulfated or carboxylated mucopolysaccharides. It is frequently used in histology, cytology, and pathology applications to aid in the diagnosis of various diseases and conditions. The dye is usually applied to tissue sections prior to microscopic examination and can be differentiated using an acidic alcohol solution. Toluidine blue (ZnCl2) is a relatively simple and inexpensive stain with good reproducibility, making it a popular choice for many laboratories.

HY-D0405

C.I. Pigment yellow 74	Fluorescent Dyes
C.I. Pigment yellow 74 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0457

C.I. Solvent red 179	Fluorescent Dyes
C.I. Solvent red 179 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D2337

Quinophthalone	Fluorescent Dyes
Quinophthalone is a dye with distinctive greenish yellow color. Quinophthalone is used as coloring agents for various materials. Quinophthalone is a strong sensitizer in guinea pigs, and its threshold concentration for induction and challenge is 10 ppm .

HY-D0312

Mordant Blue 13 Sunchromine Fast Blue MB	Fluorescent Dyes
Mordant Blue 13 is a synthetic dye used in the textile industry. It belongs to a class of metal complex dyes that are able to form strong bonds with fabrics and other materials. Mordant Blue 13 is commonly used for dyeing cotton, wool and silk fibres, it produces a fast blue color. It can be applied to textiles by a variety of methods including impregnation, padding and printing.

HY-D2771

BP Fluor 405 NHS ester

Fluorescent Dyes

BP Fluor 405 NHS Ester is a water-soluble, blue-fluorescent dye that is often used in multi-color applications, including flow cytometry and super-resolution microscopy using STORM. Its excitation is ideally suited for the 407 nm spectral line of the krypton laser or the 408 nm violet laser diode. BP Fluor 405 conjugates are pH-insensitive from pH 4 to pH 10. The NHS ester (or succinimidyl ester) is the most popular amine reactive group for labeling with the primary amines of proteins (Lys), amine-modified oligonucleotides, and other amine-containing molecules. Proteins can be labeled with BP Fluor 405 NHS Ester at high molar ratios without significant self-quenching, leading to brighter conjugates and more sensitive detection. BP Fluor 405 conjugates can also be used for the detection of abundance targets.

HY-D0488

C.I. Pigment orange 36	Fluorescent Dyes
C.I. Pigment orange 36 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0686

C.I. Pigment red 221	Fluorescent Dyes
C.I. Pigment red 221 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0450

C.I. Pigment red 112	Fluorescent Dyes
C.I. Pigment red 112 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0486

C.I. Pigment violet 32	Fluorescent Dyes
C.I. Pigment violet 32 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0442

C.I. Pigment red 14	Fluorescent Dyes
C.I. Pigment red 14 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0510

C.I. Pigment orange 34	Fluorescent Dyes
C.I. Pigment orange 34 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0725

C.I. Pigment yellow 180	Fluorescent Dyes
C.I. Pigment yellow 180 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0445

C.I. Pigment orange 16	Fluorescent Dyes
C.I. Pigment orange 16 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0489

C.I. Pigment orange 38	Fluorescent Dyes
C.I. Pigment orange 38 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0459

C.I. Pigment brown 25	Fluorescent Dyes
C.I. Pigment brown 25 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0426

C.I. Pigment red 8	Fluorescent Dyes
C.I. Pigment red 8 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0428

C.I. Pigment red 9	Fluorescent Dyes
C.I. Pigment red 9 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0460

C.I. Pigment red 48 Pigment red 48 calcium salt	Fluorescent Dyes
C.I. Pigment red 48 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0394

C.I. Pigment red 2	Fluorescent Dyes
C.I. Pigment red 2 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-D0519

C.I. Pigment red 52:1	Fluorescent Dyes
C.I. Pigment red 52:1 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

HY-137858

H-Gly-Arg-pNA hydrochloride Gly-Arg-4-NA hydrochloride; GR-pNA hydrochloride; GR p-itoailide hydrochloride	Fluorescent Dyes
H-Gly-Arg-pNA hydrochloride (GR-pNA hydrochloride) is a colorimetric substrate for thrombin. H-Gly-Arg-pNA is preferentially bound by thrombin and cleaves the Gly-Arg (GR) peptide sequence, releasing p-nitroaniline (pNA) that can be detected colorimetrically at 405 nm. H-Gly-Arg-pNA hydrochloride is used as a fluorescent dye to measure thrombin activity .

HY-D1676

Thymolphthalein monophosphate disodium hydrate

Fluorescent Dyes

Thymolphthalein monophosphate disodium hydrate is a chromogenic substrate for the determination of acid phosphatase and alkaline phosphatase. Thymolphthalein is released during the reaction, increases the pH of the medium for easy detection, produces color and stops hydrolysis. Thymolphthalein monophosphate disodium hydrate can be used for the specific detection of prostatic phosphatase in serum .

Cat. No.	Product Name	Type

HY-W034953

Bathocuproine disulfonate disodium

2 Publications Verification

Biochemical Assay Reagents

Bathocuproine disulfonate disodium (BCS) is an organic compound used as a highly sensitive colorimetric reagent for copper ions in biochemical and analytical applications. It has a bright yellow color and absorbs light at specific wavelengths, so it can be used to detect and quantify trace copper. In biochemical applications, BCS is commonly used to study the role of copper ions in various biological processes. Copper is an essential nutrient for many organisms, but it can also be toxic in high concentrations, so accurate measurement of copper levels is important to understand its impact on living systems. In terms of analysis, BCS is often used in environmental monitoring and water quality testing to detect copper pollution. It can detect copper even at very low concentrations, making it an invaluable tool for identifying potential sources of pollution and assessing the impact of industrial activities on aquatic ecosystems.

HY-W014449

4-Nitrophenyl butyrate

Biochemical Assay Reagents

4-Nitrophenyl butyrate consists of butyric acid chains esterified with 4-nitrophenol groups, thus giving it a yellow color. This compound is commonly used as a substrate in enzyme assays to measure esterase and lipase activity. When these enzymes cleave the ester bond, the nitrophenol group is released and the color changes from yellow to orange. Thus, the rate of color change can be used to determine enzyme activity. In addition, 4-Nitrophenyl butyrate can also be used as organic synthesis reagent and dye intermediate.

HY-150145A

Cy5-UTP sodium (10 mM in water)	Biochemical Assay Reagents
Cy5-UTP sodium (10 mM in water) is a fluorescently labeled ribonucleotide triphosphate that can be used as a substrate for terminal deoxynucleotide transferase (TdT). Cy5-UTP sodium can be used to label RNA probes generated in vitro (Ex/Em: 650/665 nm). Cy5-UTP sodium can be applied in FISH, multi-color fluorescence analysis, especially in dual-color expression arrays combined with Cy5-UTP .

HY-D1247

Hydroxynaphthol Blue

Biochemical Assay Reagents

Hydroxynaphthol Blue is an azo dye and serves as a metal indicator. Hydroxynaphthol Blue binds to specific metal ions to form stable complexes with distinct color and fluorescence properties. Hydroxynaphthol Blue is used for the visual monitoring of isothermal nucleic acid amplification results. A visible color difference appears between positive and negative nucleic acid amplification reactions, allowing result discrimination by the naked eye without opening the reaction tube .

HY-W110798

Bromophenol blue indicator (3.0-4.6)

1 Publications Verification

Biochemical Assay Reagents

Bromophenol blue indicator (3.0-4.6) is a synthetic dye commonly used as an acid-base indicator with a transition range of pH 3.0-4.6. Bromophenol blue indicator (3.0-4.6) is water soluble and changes color from yellow to blue as the pH of the solution changes from acidic to basic. Its unique chemical properties make it an important ingredient in a variety of scientific applications, especially in biochemistry and molecular biology. In addition, it can be used as a stain in microbiology and histology. However, Bromophenol blue indicator (3.0-4.6) has potential irritating and staining properties.

HY-W040144

Bromocresol green

Biochemical Assay Reagents

Bromocresol green is a pH-sensitive triphenylmethane dye commonly used for the determination of protein and albumin in serum. Bromocresol green is a bio-based dye with a yellow-green to blue-green color. Bromocresol green turns yellow (λmax=435 nm, protonated form) when placed in acidic solution (e.g. pH=4.15), and turns blue in basic solution (λmax=615 nm, deprotonated form). Bromocresol green is widely used as a pH indicator in the field of biochemical analysis. In addition, Bromocresol green is also used to detect the concentration of molecules such as creatinine, and to judge the viability of cells .

HY-W129633

2,6-Dichlorophenolindophenol sodium hydrate

1 Publications Verification

DCIP sodium hydrate; DPIP sodium hydrate

Biochemical Assay Reagents

2,6-Dichlorophenolindophenol (DCIP; DPIP) sodium hydrate is a redox chromogenic indicator with a redox potential of +217 mV relative to SHE, and it acts as a substrate for reduction reactions. During the metabolic process of nutrient consumption by Saccharomyces cerevisiae, 2,6-Dichlorophenolindophenol sodium hydrate is reduced from dark blue to colorless, resulting in a decrease in absorbance. 2,6-Dichlorophenolindophenol sodium hydrate is widely used in spectrophotometric biochemical oxygen demand determination and preclinical colorimetric toxicity analysis for heavy metal ion detection based on Saccharomyces cerevisiae .

HY-125809

4-(1-Phenylethyl)resorcinol	Biochemical Assay Reagents
4-(1-Phenylethyl)resorcinol is a skin lightening agent used in cosmetics. It works by inhibiting the production of melanin, the pigment that gives skin its color. This helps reduce the appearance of dark spots, hyperpigmentation and uneven skin tone. 4-(1-Phenylethyl)resorcinol is considered safe for cosmetic use and is approved for use in several countries.

HY-W110910

Eriochrome black T, Indicator

Biochemical Assay Reagents

Eriochrome black T, Indicator is a complexing agent for metal ions (e.g., Ca ²⁺, Mg ²⁺) and is used as an indicator in complexometric titrations. Eriochrome black T, Indicator forms colored complexes with metal ions through covalent coordination bonds, and indicates the endpoint of the titration by color change. Eriochrome black T, Indicator can be used as an anionic azo dye in photocatalytic degradation studies to evaluate the performance of photocatalysts. The reaction solution of Eriochrome black T, Indicator combined with Mg ²⁺ is initially purple. During loop-mediated isothermal amplification (LAMP), the color changes from purple to sky blue due to the consumption of Mg ²⁺ by the formation of magnesium pyrophosphate, indicating a positive reaction. The optimal concentration of Eriochrome black T, Indicator in LAMP is 60 μM, and the detection limit for Mycobacterium tuberculosis is 1 pg DNA/reaction .

HY-W110794

Crystal violet, IND (0.0-2.0)	Biochemical Assay Reagents
Crystal violet, IND (0.0-2.0) is a specialized indicator suitable for strongly acidic systems, which reflects changes in pH within the range of 0.0-2.0 through color changes. Crystal violet, IND (0.0-2.0) is widely used in acid-base titration, chemical analysis, and industrial testing fields .

HY-W115721

Rhodizonic acid disodium

Sodium rhodizonate dibasic

Biochemical Assay Reagents

Rhodizonic acid disodium (Sodium rhodizonate dibasic) is a transition metal-dependent pro-oxidant and lead detection agent that induces reactive oxygen species generation, DNA damage, and inhibits Aconitase activity. Rhodizonic acid disodium generates superoxide anion radicals in an iron (II)-dependent manner, leading to aconitase inactivation. Rhodizonic acid disodium also triggers hydroxyl radical-mediated DNA strand breaks and 8-OHdG formation via copper ion reduction. Rhodizonic acid disodium reacts with lead to form a scarlet precipitate, with the color intensity proportional to lead content, enabling qualitative or quantitative analysis of lead. Rhodizonic acid disodium can also be used for real-time visualization of the dynamic process of lead sequestration in the plant rhizosphere and evaluation of the effects of environmental factors such as soil type on the stability of lead-sequestering structures .

HY-W087928

Bromocresol purple	Biochemical Assay Reagents
Bromocresol purple is a pH indicator, whose color changes from yellow to purple when the pH increases from 5.2 to 6.8. Bromocresol purple can be used for detecting yeast cells with plasma membrane damage and measuring serum albumin concentrations .

HY-B1529A

Citric acid triammonium Maximum Cited Publications 8 Publications Verification Triammonium citrate	Biochemical Assay Reagents
Citric acid triammonium (Triammonium citrate) is formed by Citric acid (HY-N1428) reacting with ammonia in a molar ratio of 1:3. Citric acid triammonium can be used as the carbon source to prepare carbon quantum dots (CDs). Citric acid triammonium with higher nitrogen components might promote the nitrogen-based functional groups in CDs, leading to a more efficient emission-color tunability .

HY-150145

Cy5-UTP	Biochemical Assay Reagents
Cy5-UTP is a fluorescently labeled ribonucleotide triphosphate that can be used as a substrate for terminal deoxynucleotidyl transferase (TdT). Cy5-UTP can be employed to label RNA probes generated in vitro (Ex/Em: 650/665 nm). Cy5-UTP can be applied in FISH, multi-color fluorescence analysis, especially in dual-color expression arrays that combine with Cy5-UTP .

HY-128545

Nitrazine yellow Nitrazine paper; Phenaphthazine	Biochemical Assay Reagents
Nitrazine yellow (Nitrazine paper; Phenaphthazine) is a pH indicator. The color of Nitrazine yellow changes from yellow to blue in the pH range from 6.0 to 7.0. Nitrazine yellow is a kind of biological materials or organic compounds that are widely used in life science research .

HY-D0008

Brilliant green	Biochemical Assay Reagents
Brilliant green is a cationic dye used to color silk and wool. Brilliant green inhibits propagation of mold, intestinal parasites and fungus. Brilliant green is effective against Gram-positive bacteria .

HY-W110789

Ethyl Orange sodium, indicator grade	Biochemical Assay Reagents
Ethyl Orange (sodium), indicator grade is an organic azo compound that can be used as a pH indicator from pH 3.0 to pH 4.8, changing color from red to orange.

HY-W016656

4-Phenylurazole 4-Phenyl-1,2,4-triazolidine-3,5-dione	Biochemical Assay Reagents
4-Phenylurazole (4-Phenyl-1,2,4-triazolidine-3,5-dione) is an important intermediate. 4-Phenylurazole also serves as a photographic emulsion stabilizer and a lubricant additive .

HY-W110790

Bromocresol purple sodium	Biochemical Assay Reagents
Bromocresol purple sodium is a pH indicator, whose color changes from yellow to purple when the pH increases from 5.2 to 6.8. Bromocresol purple sodium can be used for detecting yeast cells with plasma membrane damage and measuring serum albumin concentrations .

HY-W087913

alpha-Naphtholphthalein	Biochemical Assay Reagents
alpha-Naphtholphthalein is an indicator that is light yellow at pH 6 and gradually shows a clear color change with increasing pH to light green-green-blue. alpha-Naphtholphthalein can be impregnated into cotton-blend fabrics and used to develop medical supplies for wound pH monitoring, such as medical gauze, hospital gowns and compression bandages .

HY-D1224A

Chlorophenol red β-D-galactopyranoside sodium

CPRG sodium

Biochemical Assay Reagents

Chlorophenol red-β-D-galactopyranoside (CPRG) sodium is an efficient and sensitive chromogenic substrate for β-galactosidase (HY-P2869), widely used in colorimetric assays. Chlorophenol red-β-D-galactopyranoside sodium itself appears pale yellow. When it is specifically hydrolyzed by β-galactosidase, it releases chlorophenol red. The released chlorophenol red turns purple-red under alkaline or neutral pH conditions. This color change from yellow to red can be quantitatively detected at wavelengths of 540-572 nm using visible spectrophotometry .

HY-W111168

Acid chrome blue K	Biochemical Assay Reagents
Acid chrome blue K is a metal indicator. The solution color of the LAMP (Loop-mediated isothermal amplification) reaction with ACBK (Acid chrome blue K) changes from red to blue based on a decrease in the Mg ²⁺ concentration in the reaction solution .

HY-W142402

cis-Aconitic anhydride	Biochemical Assay Reagents
cis-Aconitic anhydride, in the presence of acetic anhydride, can be used to detect and determine aliphatic tert-amines and alkaloids. Cis-aconitine anhydride reacts with aliphatic tertiary amines in alcoholic solution to form a yellow color .

Cat. No.	Product Name	Target	Research Area

HY-P1047

β-Sheet Breaker Peptide iAβ5 [Pro18, Asp21] β-Amyloid (17-21)	Amyloid-β	Neurological Disease
β-Sheet Breaker Peptide iAβ5 is an effective brain amyloid-β (Abeta) degrader. Abeta deposits are associated with Alzheimer's disease (AD), and the related toxicity arises from its β-sheet conformation and aggregation. β-Sheet Breaker Peptide iAβ5 can repeatedly induce the degradation of fibrillary amyloid deposits in vivo. Therefore, β-Sheet Breaker Peptide iAβ5 can prevent and/or reverse neuronal contraction caused by Abeta and reduce the range of interleukin IL-1beta positive microglial-like cells around Abeta deposits. β-Sheet Breaker Peptide iAβ5 can reduce the size and/or number of brain amyloid plaques in AD. β-Sheet Breaker Peptide iAβ5 is labeled with a hydrophobic benzyl alcohol (HBA) tag and shows a bright blue color under acidic conditions, which can be used for quantitative determination.

HY-P3836

[His7] Corazonin	Endogenous Metabolite	Neurological Disease
[His7] Corazonin, a neurohormone, induces dark color in the cuticle and epidermis of Locusta migratoria .

Cat. No.	Product Name

HY-K1011

*3-Color* Prestained Protein Marker (10-190 kDa)** 4 Publications Verification
MCE 3-Color Prestained Protein Marker (10-190 kDa) is a three-color protein standard with 10 prestained proteins ranging from 10 kDa to 190 kDa. The 250 μL is defined as the base specification. All larger sizes correspond to incremental volumes of this base.

HY-K1101

*3-Color* Prestained Protein Marker (2.7-40 kDa)**
MCE 3-Color Prestained Protein Marker (2.7-40 kDa) is a three-color protein standard with 9 prestained proteins ranging from 2.7 kDa to 40 kDa. The 250 μL is defined as the base specification. All larger sizes correspond to incremental volumes of this base.

HY-K1107

*DAB Peroxidase Substrate Kit (Purple-Blue Color)*
MCE DAB Peroxidase Substrate Kit (Purple-Blue Color) can be used for staining and color development detection in experiments such as immunohistochemistry of cells or tissues, in situ hybridization, Western blotting, and for visualizing endogenous HRP in cells or tissues.

HY-K0524

2-Color Tracking SYBR qPCR Master Mix (Universal)

1 Publications Verification

MCE 2-Color Tracking SYBR qPCR Master Mix (Universal) is a 2× concentration premixed reagent utilizing a special performance-enhanced Taq DNA polymerase protected via a hot-start activation technique, and optimized qPCR buffer system to perform SYBR Green I based quantitative PCR (qPCR). The 100 rxns is defined as the base specification. All larger sizes correspond to incremental volumes of this base.

HY-KD1001

Vari Fluor 3-colour Multiple Fluorescent Staining Kit (For mouse samples)
The MCE three-color immunohistochemical kit marks the dual indicators. The kit contains rabbit secondary antibodies and can be used in combination with rabbit primary antibodies

HY-KD1003

Vari Fluor 4-colour Multiple Fluorescent Staining Kit (For mouse samples)
The MCE four-color immunohistochemical kit can label three indicators. The kit contains rabbit secondary antibodies and can be used in combination with rabbit primary antibodies.

HY-KD1002

Vari Fluor 3-colour Multiple Fluorescent Staining Kit (For all samples) 1 Publications Verification
The MCE three-color immunohistochemical kit marks the dual indicators. The kit contains a universal secondary antibody for mice and rats and can be used in combination with rabbit or mouse primary antibodies.

HY-KD1004

Vari Fluor 4-colour Multiple Fluorescent Staining Kit (For all samples)
The MCE four-color histochemical kit can label three indicators. The kit contains a universal secondary antibody for rabbits and mice and can be used in combination with primary antibodies for rabbits or mice.

HY-K6002

Basement Membrane Matrix Maximum Cited Publications 20 Publications Verification
MCE Basement Membrane Matrix is primarily composed of natural basement membrane matrix extracted from mouse tumors.This product is mainly used for studies of tumor invasion, angiogenesis and organoids culture while avoiding color interference in subsequent experiments.

HY-K6004

Basement Membrane Matrix GFR

2 Publications Verification

MCE Basement Membrane Matrix GFR (Growth Factor Reduced) is primarily composed of a natural basement membrane matrix derived from mouse tumors and contains less various cytokines than the standard type.This product is mainly used for organoid culture. It is also for research applications with high requirements for basement membrane preparation and has no effect on subsequent experiments requiring color detection.

HY-K0613

Oil Red O Staining Kit for Cultured Cells

MCE Oil Red O Staining Kit for Cultured Cells consists of Oil Red O staining solution and hematoxylin. It is used to demonstrate fat degeneration and abnormal lipid deposition in cultured cells, particularly when multiple neutral fat droplets are present within the cells. This kit helps in identifying lipid changes and their nature in cultured cells. It is important to note that samples should not be fixed with ethanol-containing fixatives, as ethanol may interfere with lipid staining. The positive staining result for fat typically appears orange-yellow to red, with the exact color depending on the lipid concentration.

HY-K0614

Oil Red O Staining Kit for Cell Smears

MCE Oil Red O Staining Kit for Cell Smears effectively stains lipid droplets of various sizes, including smaller lipid droplets, and preferentially adsorbs dye from the solvent. It is suitable for staining oil red O in cell smears, bone marrow smears, fluid smears, blood smears, and other samples. When using the kit, specimens should not be fixed with fixatives containing ethanol. If fixation is required, 10% formalin can be used. The positive staining result for fat typically appears orange-yellow to red, with the exact color varying depending on the lipid concentration.

Cat. No.	Product Name	Category	Target	Chemical Structure

HY-N7476

Colominic acid sodium salt Polysialic acid sodium salt	Microorganisms Classification of Application Fields Inflammation/Immunology Disease Research Fields Saccharides Source Classification	Antibiotic
Colominic acid sodium salt (Polysialic acid sodium salt) could be naturally isolated from the cell wall of Escherichia coli and animals, gives a red color which has an absorption maximum at 530 nm. Colominic acid sodium salt (Polysialic acid sodium salt) possesses anti-bacterial activity .

HY-N1347

Robinetin 1 Publications Verification 3,3',4',5',7-Pentahydroxyflavone	Infection Flavonols Flavonoids other families Classification of Application Fields Phenols Polyphenols Plants Disease Research Fields Source Classification	Fungal HIV Integrase Bacterial
Robinetin (3,3',4',5',7-Pentahydroxyflavone), a naturally occurring flavonoid with remarkable ‘two color’ intrinsic fluorescence properties, has antifungal, antiviral, antibacterial, antimutagenesis, and antioxidant activity. Robinetin also can inhibit lipid peroxidation and protein glycosylation .

HY-N8502

Urdamycin A	Microorganisms Antibiotics Source Classification	Fluorescent Dye
Urdamycin A (Compound 3b) is an angucycline antibiotic that can be isolated from Streptomyces fradiae. Urdamycin A is an orange indicator with a change of the color to ultramarine blue at pH 7.7. Urdamycin A has anticancer activity with IC₅₀s of 2.4 and 0.55 μg/mL in proliferation and stem cell assays, respectively .

HY-W747992

Indicaxanthin	Structural Classification Natural Products Cactaceae Opuntia ficus-indica (L.) Mill. Plants Source Classification	Endogenous Metabolite
Indicaxanthin is a natural water-soluble betalain, presenting a yellow-orange color. Indicaxanthin possesses free radical scavenging ability and can inhibit lipid peroxidation, reducing the formation of malondialdehyde (MDA). Indicaxanthin can be used in the research of cardiovascular diseases and diabetes .

HY-129140

Delphinidin-3-O-arabinoside chloride 1 Publications Verification	Anthocyans Flavonoids Rhododendron simsii Planch. Plants Ericaceae Source Classification	Others
Delphinidin-3-O-arabinoside chloride is an anthocyanin chloride compound. It is formed by combining Delphinidin (an anthocyanin with a natural purple color) with the 3-O-arabinoside group. Delphinidin-3-O-arabinoside can be isolated from Rhododendron and is in the form of furanose .

HY-N1347R

Robinetin (Standard) 3,3',4',5',7-Pentahydroxyflavone (Standard)	Flavonols Structural Classification Flavonoids other families Phenols Polyphenols Plants Source Classification	Reference Standards Fungal HIV Integrase Bacterial
Robinetin (Standard) is the analytical standard of Robinetin. This product is intended for research and analytical applications. Robinetin (3,3',4',5',7-Pentahydroxyflavone), a naturally occurring flavonoid with remarkable ‘two color’ intrinsic fluorescence properties, has antifungal, antiviral, antibacterial, antimutagenesis, and antioxidant activity. Robinetin also can inhibit lipid peroxidation and protein glycosylation .

HY-N8224A

(E)-5-O-Cinnamoylquinic acid	Animals Ketones, Aldehydes, Acids Phenylpropanoids Source Classification	Others
(E)-5-O-Cinnamoylquinic acid is the isomer of 5-O-Cinnamoylquinic acid. 5-O-Cinnamoylquinic acid is a co-pigment. 5-O-Cinnamoylquinic acid could form the stable blue solution to clarify the mechanism of blue sepal-color development of hydrangea .

Cat. No.	Product Name	Chemical Structure

HY-D0233S

Leucocrystal violet-d6

Leucocrystal violet-d₆ is the deuterium labeled Leucocrystal violet (HY-D0233). Leucocrystal violet is a cationic triarylmethane dye. Leucocrystal violet generates a colored purple product in the presence of hydrogen peroxide and horseradish peroxidase, or when oxidized by periodate under the catalysis of horseradish peroxidase. Leucocrystal violet serves as a chromogenic reagent for the determination of submicrogram-level hydrogen peroxide, with no interference from tryptophan, persulfate or chromate. Leucocrystal violet reacts with blood to produce a purple/violet color in the presence of hydrogen peroxide; it forms a very weak fluorophore when acting with whole blood in an unbuffered solution, with a maximum absorption wavelength of 630 nm and a maximum fluorescence emission wavelength of 665 nm upon excitation at 630 nm. Leucocrystal violet is widely used for staining blood residues on porous and non-porous materials.

Cat. No.	Product Name		Classification

HY-W800694

BP Fluor 405 alkyne triTEA		Alkynes
BP Fluor 405 alkyne triTEA is a blue-fluorescent dye that often used in multi-color applications, including flow cytometry and super-resolution microscopy using STORM. Its excitation is ideally suited for the 407 nm spectral line of the krypton laser or the 408 nm violet laser diode. BP Fluor 405 alkyne triTEA reacts with azides via a copper-catalyzed click reaction (CuAAC) to form a stable triazole linker. A probe for copper-less detection (BP Fluor 405 DBCO) is also available for application where the presence of copper is not acceptable.

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