73 Results for "

color change

" in MedChemExpress (MCE) Product Catalog:
Products (73)

73 Results for "color change" in MCE Product Catalog:

2
2 Cited Publications
Cat. No.: HY-108913
CAS No.: 41906-86-9
Purity:  92.27%
Research Areas:  

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 .
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2
2 Cited Publications
Cat. No.: HY-D1224
CAS No.: 99792-79-7
Synonyms: CPRG
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 .
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1
1 Cited Publications
Cat. No.: HY-D0169
CAS No.: 143-74-8
Synonyms: Phenolsulfonephthalein
Phenol red (Phenolsulfonephthalein) is a pH indicator dye, relying on a distinct color change from pink to yellow in case of a positive reaction .
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1
1 Cited Publications
Cat. No.: HY-D0018
CAS No.: 620-45-1
Synonyms: Dichlorophenylindophenol sodium; DCPIP sodium; Indochlorophenol sodium
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.
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1
1 Cited Publications
Cat. No.: HY-W110798
CAS No.: 115-39-9
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.
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1
1 Cited Publications
Cat. No.: HY-151644
CAS No.: 78044-20-9
Purity:  98.90%
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].
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1
1 Cited Publications
Cat. No.: HY-D0169A
CAS No.: 34487-61-1
Synonyms: Phenolsulfonephthalein sodium salt
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 .
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Cat. No.: HY-118462
CAS No.: 70217-82-2
Purity:  99.70%
Synonyms: Coelenterazine 400a; Bisdeoxycoelenterazine
Target:  

Fluorescent Dye

Research Areas:  

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) .
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Cat. No.: HY-W014449
CAS No.: 2635-84-9
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.
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Cat. No.: HY-169798
CAS No.: 23481-50-7
Target:  

Fluorescent Dye VSV

Research Areas:  

Infection

1,9-Dimethylmethylene blue is a photosensitizer, virus inactivator and hemoglobin oxidant derived from methylene blue. When activated, 1,9-Dimethylmethylene blue generates reactive oxygen species including singlet oxygen, and acts as a metachromatic dye. When activated in monomeric or dimeric form, 1,9-Dimethylmethylene blue induces photoinactivation of R17 phage and vesicular stomatitis virus and oxidizes hemoglobin via non-singlet oxygen reactive oxygen species or singlet oxygen-mediated pathways, respectively. The monomeric form, with higher nucleic acid affinity, achieves virus inactivation under specific conditions without forming methemoglobin. 1,9-Dimethylmethylene blue binds to substances such as glycosaminoglycans to produce color changes. Although it is susceptible to interference from non-glycosaminoglycan components in urine, it is still applicable to spectrophotometric analysis for glycosaminoglycan quantification. With these unique photochemical and binding properties, 1,9-Dimethylmethylene blue is widely used in studies of viral infections and related biochemical analyses .
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Cat. No.: HY-W110794
CAS No.: 548-62-9
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 .
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Cat. No.: HY-W110910
CAS No.: 1787-61-7
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 .
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Cat. No.: HY-W087928
CAS No.: 115-40-2
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 .
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Cat. No.: HY-W133919
CAS No.: 28631-66-5
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.
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Cat. No.: HY-D1137
CAS No.: 5590-18-1
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.
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Cat. No.: HY-128369
CAS No.: 587-98-4
Purity:  ≥85.0%
Synonyms: Metanil Yellow
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 .
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Cat. No.: HY-W127790
CAS No.: 52746-49-3
Bathophenanthrolinedisulfonic acid disodium is an iron ion chelator that serves as a colorimetric reagent for iron ion detection. Bathophenanthrolinedisulfonic acid disodium forms stable, strong complexes with Fe 2+ and Fe 3+, and each complex exhibits reversible redox behavior. Bathophenanthrolinedisulfonic acid disodium can act as a ligand to form water-soluble ruthenium catalysts, which promote the hydrogenation of the ketone group in levulinic acid to produce γ-valerolactone. When Bathophenanthrolinedisulfonic acid disodium and its iron complex are incorporated into a polymer-modified electrode, rapid color change from red to transparent occurs during potential cycling .
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Cat. No.: HY-D0429
CAS No.: 6410-41-9
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.
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Cat. No.: HY-D0812
CAS No.: 125-31-5
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) .
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Cat. No.: HY-128545
CAS No.: 5423-07-4
Synonyms: Nitrazine paper; Phenaphthazine
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 .
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