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Results for "

azo

" in MedChemExpress (MCE) Product Catalog:

By Targets:	Bcr-Abl (2) Biochemical Assay Reagents (34) Cholinesterase (ChE) (1) Cytochrome P450 (1) Drug Derivative (2) Drug Intermediate (2) E3 Ligase Ligand-Linker Conjugates (2) Endogenous Metabolite (1) Enterovirus (1) Environmental Pollutants (11) Fluorescent Dye (65) Glutathione Peroxidase (1) Isotope-Labeled Compounds (3) MMP (1) MOFs (1) Opioid Receptor (1) P-glycoprotein (1) Parasite (1) PROTACs (2) Reference Standards (10) SARS-CoV (1) Sodium Channel (1) TRP Channel (1) Tyrosinase (1)
By Research Areas:	Cancer (8) Cardiovascular Disease (2) Infection (3) Inflammation/Immunology (6) Metabolic Disease (5) Neurological Disease (3)
Click Chemistry:	DBCO (2)

120

Inhibitors & Agonists

Fluorescent Dyes

Biochemical Assay Reagents

Natural
Products

Isotope-Labeled Compounds

Click Chemistry

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-D0236

Congo Red 4 Publications Verification	Fluorescent Dye	Others
Congo Red is an azo dye. Congo Red (CR) binding been used as a diagnostic test for the presence of amyloid in tissue sections.

HY-D0257

Tartrazine 1 Publications Verification Acid Yellow 23; FD&C Yellow No. 5	Environmental Pollutants Fluorescent Dye	Cardiovascular Disease Neurological Disease
Tartrazine (Acid Yellow 23; FD&C Yellow No. 5) is an orally active azo acid dye, orange-yellow powder, soluble in water and turns yellow. Tartrazine is mainly used as a synthetic lemon yellow azo dye for food coloring. Tartrazine is the most stable colorant.Tartrazine induces mitochondria-mediated Apoptosis. Tartrazine can cause neurodevelopmental toxicity, cytotoxicity, and genotoxicity .

HY-Y0695

Amido Black 10B Naphthol Blue Black	Environmental Pollutants Fluorescent Dye	Others
Amido Black 10B (Naphthol Blue Black) is a highly toxic azo dye. Amido Black 10B is genotoxic and mutagenic. Amido Black 10B can cause respiratory problems. Amido Black 10B is used for amino acid dyeing .

HY-128448

Carmoisine azorubine; Acid Red 14; E122	Environmental Pollutants Fluorescent Dye	Inflammation/Immunology
Carmoisine (Azorubine) is an azo dye that can be used as a food additive .

HY-D0256

Direct Black 38 2 Publications Verification Chlorazol Black E; Ferristatin II disodium; C.I. 30235	Biochemical Assay Reagents	Others
Direct Black 38 (Chlorazol Black E) is a benzidine-based azo dye, a substrate of Enterococcus gallinarum, and is mainly used for textile dyeing. Direct Black 38 is biodegradable after being reduced by microbial enzymes (such as Enterococcus gallinarum azoreductase), breaking the azo bonds and releasing benzidine and 4-aminobiphenyl. Direct Black 38 can be used in environmental toxicology, wastewater treatment and carcinogenicity studies, but its metabolite benzidine is listed as a human carcinogen .

HY-D0193

Ponceau 4R 1 Publications Verification Acid Red 18; New Coccine	Environmental Pollutants Fluorescent Dye	Others
Ponceau 4R is a synthetic colorant that can be used for food coloring. Ponceau 4R is a strawberry red azo dye that can be used in a variety of foods, usually synthesized from aromatic hydrocarbons, and is stable to light, heat, and acids .

HY-D0249

Sunset Yellow FCF 1 Publications Verification Orange Yellow S; Food Yellow 3; CI 15985	Environmental Pollutants Fluorescent Dye	Others
Sunset Yellow FCF (Orange Yellow S) is an orange azo dye with a maximum absorption wavelength of 480 nm. Sunset Yellow FCF can be used in food, cosmetics and pharmaceuticals .

HY-118907

Methyl Orange	Fluorescent Dye	Others
Methyl Orange is a soluble azo dye commonly used as an acid-base indicator and for staining cells and tissue sections, as well as for dyeing textiles. Methyl Orange appears red at a pH of 3.1 and changes to bright yellow as the pH increases to 4.4. Methyl Orange (500 mg/L) exhibits cytotoxicity and can cause DNA damage .

HY-D0307A

Amaranth Acid Red 27; azorubin S; FD & C Red Dye No. 2	Environmental Pollutants Biochemical Assay Reagents	Inflammation/Immunology
Amaranth is an organic azo dye. Amaranth inhibits cellular immune response. Amaranth can be used as a food additive .

HY-D0342

Disperse Red 1	Fluorescent Dye	Others
Disperse Red 1, an azobenzene derivative, is an azo textile dye extensively used for dyeing polyester fabrics in textile industry .

HY-N1442

Acid orange 7 Orange II; D&C Orange NO. 4	Environmental Pollutants Biochemical Assay Reagents	Others
Acid Orange 7 (Orange II; D&C Orange NO. 4) is an azo dye widely used in the textile, food and cosmetic industries. Acid Orange 7 is mainly used as a colorant by combining with fibers and other substances through azo bonds. Acid Orange 7 has a maximum absorption wavelength at 484-485 nm, and the concentration is measured using a UV-visible spectrophotometer. Acid Orange 7 is difficult to degrade and has a certain degree of toxicity. It is often used to study various sewage treatment technologies and photocatalytic degradation reactions, and to evaluate the removal effects of different treatment methods on organic pollutants .

HY-135712

Orange G Acid Orange GG	Environmental Pollutants Biochemical Assay Reagents	Others
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-W115738

PAR	Biochemical Assay Reagents	Others
PAR is an azo dye widely used as a colorimetric reagent for metal ions. PAR forms stable chelates with different metal ions. PAR can also complex with heavy metal ions in polar organic solvents, such as ethanol .

HY-D1379

Azophloxine Acid red 1	Environmental Pollutants Fluorescent Dye	Others
Azophloxine, also known as acid red 1 (AR1), is a member of synthetic red azo dye family .

HY-W151206

Hydroxy naphthol blue disodium	Fluorescent Dye	Others
Hydroxy naphthol blue disodium is an azo dye compound commonly used as an acid-base indicator (λmax = 650 nm). Within the pH range of 12 to 13, the indicator solution of Hydroxy naphthol blue disodium appears pale red in the presence of calcium ions and dark blue in the presence of disodium EDTA .

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-D0705

Acid Yellow 9 monosodium salt Hydrogen 4-aminoazobenzene-3,4'-disulphonate sodium salt	Fluorescent Dye	Others
Acid Yellow 9 monosodium salt is an azo dye, degraded by Pseudomonas fluorescens as sole source of carbon, nitrogen and energy for the bacterium .

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-D0929

Orange I α-Naphthol Orange	Fluorescent Dye	Others
Orange I (α-Naphthol Orange) is an anionic azo dye that can form a complex with Methylene blue (HY-14536) and cause fluorescence quenching. The equilibrium constant of the complex of Orange I and Methylene blue is 79900 mol ^-1·dm ³. Orange I can change the absorption spectrum of itself and Methylene blue .

HY-121525

Biebrich scarlet Ponceau BS	Biochemical Assay Reagents	Others
Biebrich scarlet is an azo organosulfur dyes.

HY-121986

Yellow AB Solvent yellow 5	Fluorescent Dye	Others
Yellow AB (Solvent yellow 5) is an azo dye that can be used as food dye .

HY-D1480

Crystal Ponceau 6R	Fluorescent Dye	Others
Crystal Ponceau 6R is a red azo dye. Crystal Ponceau 6R used in histology, for staining fibrin with the martius, scarlet and blue (MSB) Trichrome stain .

HY-Y0700

Calconcarboxylic acid	Fluorescent Dye	Others
Calconcarboxylic acid, an azo dye, acts as a silver-ion sensitizer to stain protein in SDS-PAGE gels. Calconcarboxylic acid increases silver binding on protein bands or spots by the formation of a silver-dye complex and also increases the reducing power o

HY-118320

Alizarine Yellow R Mordant orange 1	Fluorescent Dye	Others
Alizarine Yellow R (Mordant orange 1), Salicylic acid derivative (HY-B0167), is an azo dye. Alizarine Yellow R is used as a pH indicator and a biological stain in chemical examinations and dyeing industries .

HY-D1270

Direct Violet 1	SARS-CoV	Infection
Direct Violet 1, an azo dye, is a textile dye. Direct Violet 1 is also the protein-protein interaction (PPI) between the SARS-CoV-2 spike protein and ACE2 inhibitor with IC₅₀s of 1.47-2.63 μM .

HY-W127722

Direct Red 75 tetrasodium	Biochemical Assay Reagents	Others
Direct Red 75 tetrasodium salt is an azo dye.

HY-W040297

2-Methyl-5-(p-tolyldiazenyl)aniline o-Toluene-azo-o-toluidine	Biochemical Assay Reagents	Others
2-Methyl-5-(p-tolyldiazenyl)aniline is a biochemical reagent that can be used as a biological material or organic compound for life science related research.

HY-D0421

C.I. Solvent yellow 18	Fluorescent Dye	Others
C.I. Solvent yellow 18 is a lipid-soluble fluorescent azo dye, which is widely used in industries such as textiles, medicine, food, cosmetics, plastics, paints, inks, photography and papermaking .

HY-D0307AR

Amaranth (Standard) Acid Red 27 (Standard); azorubin S (Standard); FD & C Red Dye No. 2 (Standard)	Fluorescent Dye Reference Standards	Others
Amaranth (Standard) is the analytical standard of Amaranth. This product is intended for research and analytical applications. Amaranth is a dark red to purple azo dye used as a food dye and cosmetics. Amaranth is an anionic dye that can be applied to natural and synthetic fibers, leather, paper, and phenol-formaldehyde resins.

HY-108127

NAA-004 NM-004; APAZA	Glutathione Peroxidase	Inflammation/Immunology
NAA-004 (NM-004) is a novel azo compound formed by linking 5-aminosalicylic acid and 4-aminophenylacetic acid through an azo bond. NAA-004 has oral activity. NAA-004 can inhibit colon damage, intracavitary fluid accumulation, and MPO activity. NAA-004 can be used for research on colitis .

HY-128448R

Carmoisine (Standard) azorubine (Standard); Acid Red 14 (Standard); E122 (Standard)	Fluorescent Dye Reference Standards	Inflammation/Immunology
Carmoisine (Standard) is the analytical standard of Carmoisine. This product is intended for research and analytical applications. Carmoisine (Azorubine) is an azo dye that can be used as a food additive .

HY-D0249R

Sunset Yellow FCF (Standard) Orange Yellow S (Standard); Food Yellow 3 (Standard); CI 15985 (Standard)	Fluorescent Dye Reference Standards	Others
Sunset Yellow FCF (Standard) is the analytical standard of Sunset Yellow FCF. This product is intended for research and analytical applications. Sunset Yellow FCF (Orange Yellow S) is an orange azo dye with a maximum absorption wavelength of 480 nm. Sunset Yellow FCF can be used in food, cosmetics and pharmaceuticals .

HY-D0257R

Tartrazine (Standard) Acid Yellow 23 (Standard); FD&C Yellow No. 5 (Standard)	Fluorescent Dye Reference Standards	Others
Tartrazine (Standard) is the analytical standard of Tartrazine. This product is intended for research and analytical applications. Tartrazine is an azo acid dye, orange-yellow powder, soluble in water and turns yellow. It is mainly used as a synthetic lemon yellow azo dye for food coloring. It is the most stable colorant.

HY-D0640

Acid Orange 116	Fluorescent Dye
Acid Orange 116 is an azo dye that can be removed from aqueous solutions by metal ions.

HY-W094747A

Benzalazine	Drug Intermediate	Inflammation/Immunology
Benzalazine is a 5-azo derivative of 5-Aminosalicylic Acid (HY-15027) that can be used for the research of ulcerative colitis and Crohn's disease of the large intestine. The benzalazine metabolite 5-ASA and the 5-ASA metabolite acetyl-5-aminosalicylic acid are excreted mainly with the faeces .

HY-D2424

Disperse Red 343	Fluorescent Dye	Others
Disperse Red 343 is an azo dye widely used in the textile industry for dyeing polyester fabrics .

HY-D1173

Acid blue 113	Fluorescent Dye	Others
Acid blue 113 is an azo dye whose staining effect is effectively removed by nanoscale zero-valent iron (NZVI) particles.

HY-115416

Pigment Red 49:1 Barium lithol red	Fluorescent Dye	Others
Pigment Red 49:1 (Barium lithol red) is an azo lake pigment. The color of Pigment Red 49:1 ranges from yellow to purplish blue .

HY-D0256A

Direct Black 38 free acid Chlorazol Black E free acid; Ferristatin II; C.I. 30235 free acid	Biochemical Assay Reagents	Others
Direct Black 38 (Chlorazol Black E; Ferristatin II disodium) free acid is a benzidine-based azo dye, a substrate of Enterococcus gallinarum, and is mainly used for textile dyeing. Direct Black 38 free acid is biodegradable after being reduced by microbial enzymes (such as Enterococcus gallinarum azoreductase), breaking the azo bonds and releasing benzidine and 4-aminobiphenyl. Direct Black 38 free acid can be used in environmental toxicology, wastewater treatment and carcinogenicity studies, but its metabolite benzidine is listed as a human carcinogen .

HY-W110789

Ethyl Orange sodium, indicator grade	Biochemical Assay Reagents	Others
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-D0236R

Congo Red (Standard)	Fluorescent Dye Reference Standards	Others
Congo Red (Standard) is the analytical standard of Congo Red. This product is intended for research and analytical applications. Congo Red is an azo dye. Congo Red (CR) binding been used as a diagnostic test for the presence of amyloid in tissue sections.

HY-D1144

Acid blue 260	Fluorescent Dye
Acid blue 260 is an azo dye whose staining effect is effectively removed by multi-walled carbon nanotubes (MWCNTs). At 298 K, the adsorption capacity of MWCNT is 233.34 mg/g; and increases with the increase of dye concentration and temperature.

HY-Y0699R

Methyl red (Standard)	Fluorescent Dye Reference Standards	Others
Methyl red (Standard) is the analytical standard of Methyl red. This product is intended for research and analytical applications. Methyl red is an azo dye that acts as a pH indicator. Methyl red is red and yellow at pH 4.4 and 6.0 respectively .

HY-131327

Azo-resveratrol	Tyrosinase	Cancer
Azo-resveratrol, an Azo compound, inhibits Mushroom tyrosinase (IC₅₀=36.28 μM).

HY-129237

Azo-enkephalin	Opioid Receptor	Neurological Disease
Azo-enkephalin is an endorphin analog with significant analgesic activity. Azo-enkephalin can be used in the development of opioid analgesics .

HY-N15785

*18:0-Azo* PC**	Biochemical Assay Reagents	Metabolic Disease
18:0-azo PC is an analog of phosphatidylcholine (PC). Under light, 18:0-azo PC can be switched on and off by light, forcing the azobenzene portion of the molecule to undergo cis/trans isomerization, leading to the initiation or termination of cell signaling.

HY-116948

Azo-mustard	Drug Derivative	Cancer
Azo-mustard is a nitrogen mustard derivative with mutagenic effects in Drosophila melanogaster males .

HY-D0930

OrangeIV	Fluorescent Dye	Others
Acid orange 5 is an azo dye. Acid orange 5 can be used in click chemistry .

HY-D0534

2-4-(2-Cyanoethyl)(2-phenylethyl)aminophenylazo-5-nitrobenzonitrile	Fluorescent Dye	Others
2-4-(2-Cyanoethyl)(2-phenylethyl)aminophenylazo-5-nitrobenzonitrile is a storage-stable, fluid, nonagglomerating dispersions of azo dye .

HY-W320994

Heptanamide Enanthamide	Fluorescent Dye	Others
Heptanamide (Enanthamide) is a metabolite of azo dye Reactive Black 5 (RB5). Heptanamide can be used for bioremediation of azo dyes contaminated environments research

Cat. No.	Product Name	Type

HY-D0236

Congo Red 4 Publications Verification	Fluorescent Dyes
Congo Red is an azo dye. Congo Red (CR) binding been used as a diagnostic test for the presence of amyloid in tissue sections.

HY-D0257

Tartrazine

1 Publications Verification

Acid Yellow 23; FD&C Yellow No. 5

Fluorescent Dyes

Tartrazine (Acid Yellow 23; FD&C Yellow No. 5) is an orally active azo acid dye, orange-yellow powder, soluble in water and turns yellow. Tartrazine is mainly used as a synthetic lemon yellow azo dye for food coloring. Tartrazine is the most stable colorant.Tartrazine induces mitochondria-mediated Apoptosis. Tartrazine can cause neurodevelopmental toxicity, cytotoxicity, and genotoxicity .

HY-Y0695

Amido Black 10B Naphthol Blue Black	Fluorescent Dyes
Amido Black 10B (Naphthol Blue Black) is a highly toxic azo dye. Amido Black 10B is genotoxic and mutagenic. Amido Black 10B can cause respiratory problems. Amido Black 10B is used for amino acid dyeing .

HY-128448

Carmoisine azorubine; Acid Red 14; E122	Fluorescent Dyes
Carmoisine (Azorubine) is an azo dye that can be used as a food additive .

HY-D0256

Direct Black 38

2 Publications Verification

Chlorazol Black E; Ferristatin II disodium; C.I. 30235

Fluorescent Dyes

Direct Black 38 (Chlorazol Black E) is a benzidine-based azo dye, a substrate of Enterococcus gallinarum, and is mainly used for textile dyeing. Direct Black 38 is biodegradable after being reduced by microbial enzymes (such as Enterococcus gallinarum azoreductase), breaking the azo bonds and releasing benzidine and 4-aminobiphenyl. Direct Black 38 can be used in environmental toxicology, wastewater treatment and carcinogenicity studies, but its metabolite benzidine is listed as a human carcinogen .

HY-D0193

Ponceau 4R 1 Publications Verification Acid Red 18; New Coccine	Fluorescent Dyes
Ponceau 4R is a synthetic colorant that can be used for food coloring. Ponceau 4R is a strawberry red azo dye that can be used in a variety of foods, usually synthesized from aromatic hydrocarbons, and is stable to light, heat, and acids .

HY-D0249

Sunset Yellow FCF 1 Publications Verification Orange Yellow S; Food Yellow 3; CI 15985	Fluorescent Dyes
Sunset Yellow FCF (Orange Yellow S) is an orange azo dye with a maximum absorption wavelength of 480 nm. Sunset Yellow FCF can be used in food, cosmetics and pharmaceuticals .

HY-D0307A

Amaranth Acid Red 27; azorubin S; FD & C Red Dye No. 2	Fluorescent Dyes
Amaranth is an organic azo dye. Amaranth inhibits cellular immune response. Amaranth can be used as a food additive .

HY-D0342

Disperse Red 1	Fluorescent Dyes
Disperse Red 1, an azobenzene derivative, is an azo textile dye extensively used for dyeing polyester fabrics in textile industry .

HY-N1442

Acid orange 7

Orange II; D&C Orange NO. 4

Fluorescent Dyes

Acid Orange 7 (Orange II; D&C Orange NO. 4) is an azo dye widely used in the textile, food and cosmetic industries. Acid Orange 7 is mainly used as a colorant by combining with fibers and other substances through azo bonds. Acid Orange 7 has a maximum absorption wavelength at 484-485 nm, and the concentration is measured using a UV-visible spectrophotometer. Acid Orange 7 is difficult to degrade and has a certain degree of toxicity. It is often used to study various sewage treatment technologies and photocatalytic degradation reactions, and to evaluate the removal effects of different treatment methods on organic pollutants .

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-128382

Brilliant Black BN E 151	Fluorescent Dyes
Brilliant black BN (E151) is an azo dye and a food colorant . Brilliant black BN is a promising antiviral agent against EV71 infection via inhibiting the interaction between EV71 and its cellular uncoating factor cyclophilin A. Brilliant black BN has the potential for the investigation of contagious disease .

HY-D0202

Arsenazo III

Fluorescent Dyes

Arsenazo III is an azo derivative of chromotropic acid, a metal chrome dye, a chelating agent, and a cation complexing agent. Arsenazo III forms stable 1:1 complexes with Ca ²⁺, Mg ²⁺, Sr ²⁺, Ba ²⁺, K ⁺, and Na ⁺, and its binding affinity for Ca ²⁺ depends on pH, alkali metal cation concentration, and buffer parameters. Arsenazo III serves as a colorimetric indicator for micromolar ionized Ca ²⁺ in cells .

HY-D0800

Mordant Blue 29	Fluorescent Dyes
Chromeazurol S is a compound belonging to the class of azo dyes. It is often used as an indicator in analytical chemistry to detect metal ions such as copper, nickel, and cobalt. Chromeazurol S turns from yellow to blue in the presence of metal ions, allowing them to be detected and quantified. It can be applied to a test strip or added directly to a solution for analysis.

HY-D1895A

3,5-DiBr-PAESA sodium	Fluorescent Dyes
3,5-DiBr-PAESA sodium is a water-soluble pyridylazo-based highly sensitive chromogenic reagent. With the assistance of EDTA for masking copper and bromide ions for dissociating silver chelates, 3,5-DiBr-PAESA sodium enables accurate determination of sub-milligram level silver ions in strongly acidic high-copper systems via flow injection spectrophotometry .

HY-W151206

Hydroxy naphthol blue disodium	Fluorescent Dyes
Hydroxy naphthol blue disodium is an azo dye compound commonly used as an acid-base indicator (λmax = 650 nm). Within the pH range of 12 to 13, the indicator solution of Hydroxy naphthol blue disodium appears pale red in the presence of calcium ions and dark blue in the presence of disodium EDTA .

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-D0705

Acid Yellow 9 monosodium salt Hydrogen 4-aminoazobenzene-3,4'-disulphonate sodium salt	Fluorescent Dyes
Acid Yellow 9 monosodium salt is an azo dye, degraded by Pseudomonas fluorescens as sole source of carbon, nitrogen and energy for the bacterium .

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-42984

BHQ-2 NHS

Fluorescent Dyes

BHQ-2 NHS is a dark quencher with no native emission due to the polyaromatic-azo backbone and a terminal NHS ester. UBHQ-2 NHS has a wide and intense quenching range from 560-670 nm, which makes it useful as an acceptor in fluorescence resonance energy transfer (FRET) applications in conjunction with orange to far-red emitting dyes. The NHS ester can be applied to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.

HY-D1895

3,5-DiBr-PAESA	Fluorescent Dyes
3,5-DiBr-PAESA is a water-soluble pyridylazo-based highly sensitive chromogenic reagent. With the assistance of EDTA for masking copper and bromide ions for dissociating silver chelates, 3,5-DiBr-PAESA enables accurate determination of sub-milligram level silver ions in strongly acidic high-copper systems via flow injection spectrophotometry .

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-121525

Biebrich scarlet Ponceau BS	Fluorescent Dyes
Biebrich scarlet is an azo organosulfur dyes.

HY-121986

Yellow AB Solvent yellow 5	Fluorescent Dyes
Yellow AB (Solvent yellow 5) is an azo dye that can be used as food dye .

HY-Y0700

Calconcarboxylic acid	Fluorescent Dyes
Calconcarboxylic acid, an azo dye, acts as a silver-ion sensitizer to stain protein in SDS-PAGE gels. Calconcarboxylic acid increases silver binding on protein bands or spots by the formation of a silver-dye complex and also increases the reducing power o

HY-118320

Alizarine Yellow R Mordant orange 1	Fluorescent Dyes
Alizarine Yellow R (Mordant orange 1), Salicylic acid derivative (HY-B0167), is an azo dye. Alizarine Yellow R is used as a pH indicator and a biological stain in chemical examinations and dyeing industries .

HY-D1270

Direct Violet 1	Fluorescent Dyes
Direct Violet 1, an azo dye, is a textile dye. Direct Violet 1 is also the protein-protein interaction (PPI) between the SARS-CoV-2 spike protein and ACE2 inhibitor with IC₅₀s of 1.47-2.63 μM .

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-W250148

Solvent black 5

Spirit nigrosine

Fluorescent Dyes

Solvent black 5 (Spirit nigrosine) is a synthetic dye belonging to the family of azo dyes. Also known as oil black or naphthol black, it is dark blue-black and has excellent solubility in organic solvents. Solvent black 5 is commonly used as a colorant in various industrial applications such as printing inks, coatings and plastics. It can also be used as an indicator dye to detect the presence of metals in solution. Furthermore, due to its high absorption and emission properties in the near-infrared region, it has been used in scientific research as a fluorescent biomarker for tissues and cells. However, Solvent black 5 has been reported to have potentially toxic effects on human health and the environment and its use is therefore regulated in some countries.

HY-W127722

Direct Red 75 tetrasodium	Fluorescent Dyes
Direct Red 75 tetrasodium salt is an azo dye.

HY-D0421

C.I. Solvent yellow 18	Fluorescent Dyes
C.I. Solvent yellow 18 is a lipid-soluble fluorescent azo dye, which is widely used in industries such as textiles, medicine, food, cosmetics, plastics, paints, inks, photography and papermaking .

HY-D0307AR

Amaranth (Standard) Acid Red 27 (Standard); azorubin S (Standard); FD & C Red Dye No. 2 (Standard)	Fluorescent Dyes
Amaranth (Standard) is the analytical standard of Amaranth. This product is intended for research and analytical applications. Amaranth is a dark red to purple azo dye used as a food dye and cosmetics. Amaranth is an anionic dye that can be applied to natural and synthetic fibers, leather, paper, and phenol-formaldehyde resins.

HY-128448R

Carmoisine (Standard) azorubine (Standard); Acid Red 14 (Standard); E122 (Standard)	Fluorescent Dyes
Carmoisine (Standard) is the analytical standard of Carmoisine. This product is intended for research and analytical applications. Carmoisine (Azorubine) is an azo dye that can be used as a food additive .

HY-D0249R

Sunset Yellow FCF (Standard) Orange Yellow S (Standard); Food Yellow 3 (Standard); CI 15985 (Standard)	Fluorescent Dyes
Sunset Yellow FCF (Standard) is the analytical standard of Sunset Yellow FCF. This product is intended for research and analytical applications. Sunset Yellow FCF (Orange Yellow S) is an orange azo dye with a maximum absorption wavelength of 480 nm. Sunset Yellow FCF can be used in food, cosmetics and pharmaceuticals .

HY-D0257R

Tartrazine (Standard) Acid Yellow 23 (Standard); FD&C Yellow No. 5 (Standard)	Fluorescent Dyes
Tartrazine (Standard) is the analytical standard of Tartrazine. This product is intended for research and analytical applications. Tartrazine is an azo acid dye, orange-yellow powder, soluble in water and turns yellow. It is mainly used as a synthetic lemon yellow azo dye for food coloring. It is the most stable colorant.

HY-D0640

Acid Orange 116	Fluorescent Dyes
Acid Orange 116 is an azo dye that can be removed from aqueous solutions by metal ions.

HY-D2424

Disperse Red 343	Fluorescent Dyes
Disperse Red 343 is an azo dye widely used in the textile industry for dyeing polyester fabrics .

HY-D1173

Acid blue 113	Fluorescent Dyes
Acid blue 113 is an azo dye whose staining effect is effectively removed by nanoscale zero-valent iron (NZVI) particles.

HY-D0256A

Direct Black 38 free acid

Chlorazol Black E free acid; Ferristatin II; C.I. 30235 free acid

Fluorescent Dyes

Direct Black 38 (Chlorazol Black E; Ferristatin II disodium) free acid is a benzidine-based azo dye, a substrate of Enterococcus gallinarum, and is mainly used for textile dyeing. Direct Black 38 free acid is biodegradable after being reduced by microbial enzymes (such as Enterococcus gallinarum azoreductase), breaking the azo bonds and releasing benzidine and 4-aminobiphenyl. Direct Black 38 free acid can be used in environmental toxicology, wastewater treatment and carcinogenicity studies, but its metabolite benzidine is listed as a human carcinogen .

HY-D0236R

Congo Red (Standard)	Fluorescent Dyes
Congo Red (Standard) is the analytical standard of Congo Red. This product is intended for research and analytical applications. Congo Red is an azo dye. Congo Red (CR) binding been used as a diagnostic test for the presence of amyloid in tissue sections.

HY-D1144

Acid blue 260	Fluorescent Dyes
Acid blue 260 is an azo dye whose staining effect is effectively removed by multi-walled carbon nanotubes (MWCNTs). At 298 K, the adsorption capacity of MWCNT is 233.34 mg/g; and increases with the increase of dye concentration and temperature.

HY-D0534

2-4-(2-Cyanoethyl)(2-phenylethyl)aminophenylazo-5-nitrobenzonitrile	Fluorescent Dyes
2-4-(2-Cyanoethyl)(2-phenylethyl)aminophenylazo-5-nitrobenzonitrile is a storage-stable, fluid, nonagglomerating dispersions of azo dye .

HY-B1533A

Anazolene trisodium	Fluorescent Dyes
Anazolene trisodium is an anionic dye, a textile azo dye with a maximum absorption wavelength of λ_max = 571 nm .

HY-D1484

Ethyl red iodide 1,1'-Diethyl-2,4'-cyanine iodide	Fluorescent Dyes
Ethyl red (1,1'-Diethyl-2,4'-cyanine) iodide is an azo dye and acid–base indicator .

HY-D0532

N-[5-2-[Azo]phenyl]acetamide

Fluorescent Dyes

N-[5-2-[Azo]phenyl]acetamide is a multifunctional dye. Dyes are important tools in biological experiments. They can help researchers observe and analyze cell structures, track biomolecules, evaluate cell functions, distinguish cell types, detect biomolecules, study tissue pathology and monitor microorganisms. Their applications range from basic scientific research to clinical A wide range of diagnostics. Dyes are also widely used in traditional fields such as textile dyeing, as well as in emerging fields such as functional textile processing, food pigments and dye-sensitized solar cells.

HY-D1124

Mordant brown 1	Fluorescent Dyes
Mordant brown 1, a naphthalenesulphonic acid derivative, is an azo dye. Mordant brown 1 is also an effective and specific inhibitor of CD40-CD154 costimulatory protein-protein interaction .

HY-119987

Sudan orange G SOG	Fluorescent Dyes
Sudan orange G is an azo dye. Sudan orange G, after enzymatic oxidation, generates oligomers and even polymers through free radical coupling reactions .

HY-119987R

Sudan orange G (Standard) SOG (Standard)	Fluorescent Dyes
Sudan orange G (Standard) is the analytical standard of Sudan orange G. This product is intended for research and analytical applications. Sudan orange G is an azo dye. Sudan orange G, after enzymatic oxidation, generates oligomers and even polymers through free radical coupling reactions .

HY-D0466

Acid orange 51	Fluorescent Dyes
Acid orange 51 is an azo dye.

HY-D0470

Acid orange 74	Fluorescent Dyes
Acid orange 74 is an azo dye.

Cat. No.	Product Name	Type

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-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-D0800

Mordant Blue 29	Biochemical Assay Reagents
Chromeazurol S is a compound belonging to the class of azo dyes. It is often used as an indicator in analytical chemistry to detect metal ions such as copper, nickel, and cobalt. Chromeazurol S turns from yellow to blue in the presence of metal ions, allowing them to be detected and quantified. It can be applied to a test strip or added directly to a solution for analysis.

HY-W001952

6-Bromo-2-naphthol

Biochemical Assay Reagents

6-Bromo-2-naphthol is an RTP (real-time polymerase chain reaction) probe that forms a 1:1 or 2:1 complex with β-cyclodextrin (β-CD). 6-Bromo-2-naphthol is capable of real-time monitoring of PCR reactions and quantification of specific nucleic acid sequences. RTP probes are a class of small DNA or RNA sequences labeled with fluorescent dyes and quencher molecules, which can be widely used in gene expression analysis, SNP genotyping, and pathogen detection. 6-Bromo-2-naphthol embeds into the cyclodextrin cavity through hydrophobic interactions, inhibits the oxygen quenching effect, and emits a phosphorescent signal at room temperature. 6-Bromo-2-naphthol can also be used as an intermediate for the synthesis of antibacterial azo dyes, and its derivatives show antibacterial activity against Staphylococcus aureus, Escherichia coli and other bacteria .

HY-W040297

2-Methyl-5-(p-tolyldiazenyl)aniline o-Toluene-azo-o-toluidine	Biochemical Assay Reagents
2-Methyl-5-(p-tolyldiazenyl)aniline is a biochemical reagent that can be used as a biological material or organic compound for life science related research.

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-Y0699R

Methyl red (Standard)	Biochemical Assay Reagents
Methyl red (Standard) is the analytical standard of Methyl red. This product is intended for research and analytical applications. Methyl red is an azo dye that acts as a pH indicator. Methyl red is red and yellow at pH 4.4 and 6.0 respectively .

HY-D0223

1-(2-Pyridylazo)-2-naphthol 1-Pyridylazo-2-naphthol	Biochemical Assay Reagents
1-(2-Pyridylazo)-2-naphthol (1-Pyridylazo-2-naphthol) is an azo compound. 1-(2-Pyridylazo)-2-naphthol can be used as a chelating precipitant, flocculant, auxiliary complexing agent, and as a ligand for anchoring on other supports with the purpose of introducing chelating property .

HY-D0898

2,4-Dichlorobenzenediazonium tetrafluoroborate

Biochemical Assay Reagents

2,4-Dichlorobenzenediazonium tetrafluoroborate is an organic compound commonly used in organic synthesis and dye preparation reactions. It can be used as an azotating agent to form azo dyes with other organic substances, and can be used in coatings, pigments and paints and other industries. In addition, the compound is widely used in certain chemical analysis and detection methods, such as in scientific instruments such as electron microscopes and mass spectrometers. Although the compound has no direct medical applications, it plays an important role in chemical research and laboratory studies.

HY-D0930

OrangeIV	Biochemical Assay Reagents
Acid orange 5 is an azo dye. Acid orange 5 can be used in click chemistry .

HY-W750458

Acid Violet 7	Biochemical Assay Reagents
Acid Violet 7 is an azo dye that can be used to determine the degradation of dyes by various microorganisms .

HY-W040297R

2-Methyl-5-(p-tolyldiazenyl)aniline (Standard) o-Toluene-azo-o-toluidine (Standard)	Biochemical Assay Reagents
2-Methyl-5-(p-tolyldiazenyl)aniline (Standard) is the analytical standard of 2-Methyl-5-(p-tolyldiazenyl)aniline. This product is intended for research and analytical applications. 2-Methyl-5-(p-tolyldiazenyl)aniline is a biochemical reagent that can be used as a biological material or organic compound for life science related research.

HY-W020211

Benzo Red Violet 4B	Biochemical Assay Reagents
Benzopurpurine 4B is a dis-azo dye. Benzopurpurine 4B Can be used as biological stain .

HY-W145108

Methyl red hydrochloride	Biochemical Assay Reagents
Methyl red hydrochloride is an azo dye that acts as a pH indicator. Methyl red is red and yellow at pH 4.4 and 6.0 respectively .

Cat. No.	Product Name	Category	Target	Chemical Structure

HY-113045

Aquacobalamin	Microorganisms Source Classification	Endogenous Metabolite
Aquacobalamin is one of the major forms of vitamin B12 isolated from mammalian cells. Aquacobalamin accelerates the oxidation of azo-dye Orange II (HY-N1442) by HSO₅ ^- in aqueous solutions. Aquacobalamin binds hydrogen peroxide reversibly to form a cobalt(III) hydroperoxo adduct with a 0.25 mM dissociation constant .

HY-N15785

*18:0-Azo* PC**	Lipid	Biochemical Assay Reagents
18:0-azo PC is an analog of phosphatidylcholine (PC). Under light, 18:0-azo PC can be switched on and off by light, forcing the azobenzene portion of the molecule to undergo cis/trans isomerization, leading to the initiation or termination of cell signaling.

HY-N15805

Azo Coenzyme A ammonium	Lipid	Biochemical Assay Reagents
Azo Coenzyme A ammonium is a coenzyme A derivative.

HY-N17673

Avenanthramide 1c	Structural Classification Avena sativa Linn. Gramineae Phenols Polyphenols Plants Source Classification	Biochemical Assay Reagents
Avenanthramide 1c is a free radical scavenger and antioxidant. Avenanthramide 1c scavenges DPPH free radicals. Avenanthramide 1c inhibits azo-initiated linoleic acid peroxidation. Avenanthramide 1c exerts antioxidant effects. Avenanthramide 1c exhibits an antagonistic interaction with Avenanthramide 2f in the DPPH free radical scavenging system .

Cat. No.	Product Name	Chemical Structure

HY-W750212

Acid Orange 7-13C6

Acid Orange 7- ¹³C₆ (Orange II- ¹³C₆) is the ¹³C-labeled Acid orange 7 (HY-N1442). Acid Orange 7 (Orange II; D&C Orange NO. 4) is an azo dye widely used in the textile, food and cosmetic industries. Acid Orange 7 is mainly used as a colorant by combining with fibers and other substances through azo bonds. Acid Orange 7 has a maximum absorption wavelength at 484-485 nm, and the concentration is measured using a UV-visible spectrophotometer. Acid Orange 7 is difficult to degrade and has a certain degree of toxicity. It is often used to study various sewage treatment technologies and photocatalytic degradation reactions, and to evaluate the removal effects of different treatment methods on organic pollutants .

HY-D0314S

*1-(2-Methoxyphenyl)azo-2-naphthol-d3*
1-(2-Methoxyphenyl)azo-2-naphthol-d₃ is the deuterium labeled 1-(2-Methoxyphenyl)azo-2-naphthol .

HY-175996S

2-Methyl-5-(p-tolyldiazenyl)aniline-d6
2-Methyl-5-(p-tolyldiazenyl)aniline-d₆ (o-Toluene-azo-o-toluidine-d₆) is the deuterium labeled 2-Methyl-5-(p-tolyldiazenyl)aniline (HY-W040297). 2-Methyl-5-(p-tolyldiazenyl)aniline is a biochemical reagent that can be used as a biological material or organic compound for life science related research.

Cat. No.	Product Name		Classification

HY-D2579

Sulfo DBCO-UBQ-2		DBCO
Sulfo DBCO-UBQ-2 is a click chemistry reagent combining a dark quencher, UBQ-2, with a polyaromatic-azo backbone, offering no native emission. UBQ-2 effectively quenches fluorescence in the 560-670 nm range, ideal for qPCR probes and FRET applications with orange to far-red dyes .

HY-D3322

Sulfo DBCO-UBQ-1		DBCO
Sulfo DBCO-UBQ-1 is a click chemistry reagent uniting UBQ-1, which is a dark quencher with a polyaromatic-azo backbone that exhibits no native emission, with a sulfo group for improved hydrophilicity and DBCO for undergoing copper-free click chemistry.

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