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Results for "

Colorimetric Substrate

" in MedChemExpress (MCE) Product Catalog:

By Targets:	Beta-lactamase (1) Biochemical Assay Reagents (6) Caspase (3) Elastase (1) Endogenous Metabolite (1) Epoxide Hydrolase (1) Fluorescent Dye (6) Glycosidase (1) Isotope-Labeled Compounds (1) Lipase (2) Phosphatase (1) Poly(ADP-ribose) Glycohydrolase (PARG) (2) Ser/Thr Protease (3) Thrombin (1)
By Research Areas:	Cancer (3) Infection (1) Inflammation/Immunology (1) Metabolic Disease (3)

Inhibitors & Agonists

Fluorescent Dye

Biochemical Assay Reagents

Peptides

Isotope-Labeled Compounds

Targets Recommended: MARCKS

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-15926

ONPG 5+ Cited Publications 2-Nitrophenyl β-D-galactopyranoside	Biochemical Assay Reagents	Others
ONPG is a colorimetric and spectrophotometric substrate for detection of β-galactosidase activity.

HY-D1224

Chlorophenol red-β-D-galactopyranoside 2 Publications Verification CPRG	Biochemical Assay Reagents	Others
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-15909

BCIP BCIP p-toluidine salt; X-phosphate p-toluidine salt	Fluorescent Dye	Others
BCIP(BCIP p-toluidine salt; X-phosphate p-toluidine salt) is an artificial chromogenic substrate used for the sensitive colorimetric detection of alkaline phosphatase activity .

HY-W013168

4-Nitrophenyl palmitate 4-Nitrophenyl hexadecanoate; p-Nitrophenyl Palmitate; pNpp	Lipase	Others
4-Nitrophenyl palmitate (4-Nitrophenyl hexadecanoate) is a chromogenic substrate for lipases and esterases. Upon enzymatic hydrolysis, 4-Nitrophenyl palmitate releases p-nitrophenol, which can be quantified by colorimetric detection at 410 nm as a measure of enzymatic activity. 4-Nitrophenyl palmitate is used to characterize the activity of various bacterial and mammalian enzymes, including those from Burkholderia and porcine pancreatic lipase .

HY-131409

D-Val-Leu-Lys-pNA dihydrochloride D-Val-Leu-Lys-p-itoailide dihydrochloride; D-VLK-pNA dihydrochloride; S 2251 dihydrochloride	Fluorescent Dye	Others
D-Val-Leu-Lys-pNA (D-Val-Leu-Lys-p-nitroanilide) dihydrochloride is a chromogenic peptide substrate that serves as a characteristic substrate for plasmin and plasminogen. D-Val-Leu-Lys-pNA dihydrochloride acts as a sensitive substrate for the DFE27 serine protease derived from Bacillus subtilis DC27. Catalyzed by plasmin, D-Val-Leu-Lys-pNA dihydrochloride binds and hydrolyzes to release p-nitroaniline (pNA), which can be detected colorimetrically at 405 nm as a measure of fibrinolytic activity .

HY-W129633

2,6-Dichlorophenolindophenol sodium hydrate 1 Publications Verification DCIP sodium hydrate; DPIP sodium hydrate	Biochemical Assay Reagents	Others
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-P3236

N-Acetyl-Ile-Glu-Pro-Asp-p-nitroanilide Ac-IEPD-pNA	Ser/Thr Protease	Cancer
N-Acetyl-Ile-Glu-Pro-Asp-p-nitroanilide (Ac-IEPD-pNA) is a colorimetric peptide substrate of granzyme B that allows accurate measurement of granzyme B activity .

HY-W011654

4-Aminophenyl-β-D-galactopyranoside, 98% 4-Aminophenyl-beta-D-galactopyranoside, 98%	Glycosidase	Inflammation/Immunology Cancer
4-Aminophenyl-β-D-galactopyranoside, 98% is a highly efficient substrate for β-galactosidase. It is specifically hydrolyzed by this enzyme to release galactose and electroactive p-aminophenol. 4-Aminophenyl-β-D-galactopyranoside, 98% is widely used in colorimetric and electrochemical assays for detecting β-galactosidase activity and determining enzyme kinetics, such as in biosensing fields including cellular senescence, pathogen and contaminant detection. In addition, since β-galactosidase is often overexpressed in primary ovarian cancer, 4-Aminophenyl-β-D-galactopyranoside, 98% can also be applied to related research on primary ovarian cancer .

HY-W011911

L-Leucyl-4-nitroanilide	Biochemical Assay Reagents	Others
L-Leucyl-4-nitroanilide is a colorimetric substrate for leucine aminopeptidase assays.

HY-W009454

Potassium p-nitrophenyl sulfate 4-Nitopheyl Sulfate potassium	Fluorescent Dye	Others
Potassium p-nitrophenyl sulfate (4-Nitophenyl Sulfate potassium) serves as a chromogenic substrate for arylsulfatases. Potassium p-nitrophenyl sulfate releases nitrophenol under the cleavage action of arylsulfatases, and the activity of arylsulfatases can be quantitatively determined via colorimetric detection at 400 nm. Potassium p-nitrophenyl sulfate is commonly used in enzyme inhibition assays and metabolite analog-related studies .

HY-121694

CENTA	Beta-lactamase	Infection
CENTA is a colorimetric cephalosporin substrate for β-lactamases. Upon hydrolysis by β-lacatamases, CENTA turns from light yellow to chrome yellow, which can be quantified by colorimetric detection at 405 nm as a measure of β-lactamase activity.

HY-134354A

pNP-ADPr disodium ADP-ribose-pNP disodium	Poly(ADP-ribose) Glycohydrolase (PARG)	Others
pNP-ADPr disodium is a colorimetric substrate that used for the first continuous Poly(ADP-ribose) glycohydrolase (PARG) and ADP-ribosyl hydrolase 3 (ARH3) activity assays. pNP-ADPr disodium can be used for the research of poly(ADP-ribose)polymerase (PARP) enzymes .

HY-120833

Ac-Ile-Glu-Thr-Asp-pNA	Caspase	Others
Ac-Ile-Glu-Thr-Asp-pNA is a substrate for caspase-8. Caspase-8 binds to and cleaves the Ile-Glu-Thr-Asp (IETD) peptide sequence to release p-nitroalinide, which can be quantified by colorimetric detection at 405 nm as a measure of enzyme activity .

HY-121549

S-NEPC 4-Nitrophenyl-2S,3S-epoxy-3 phenylpropyl carbonate	Epoxide Hydrolase	Others
S-NEPC (4-Nitrophenyl-2S,3S-epoxy-3 phenylpropyl carbonate) is a colorimetric substrate used to measure epoxide hydrolase activity .

HY-134354

pNP-ADPr ADP-ribose-pNP	Poly(ADP-ribose) Glycohydrolase (PARG)	Others
pNP-ADPr is a colorimetric substrate that used for the first continuous Poly(ADP-ribose) glycohydrolase (PARG) and ADP-ribosyl hydrolase 3 (ARH3) activity assays. pNP-ADPr can be used for the research of poly(ADP-ribose)polymerase (PARP) enzymes .

HY-138653

Lipase Substrate DGGR; 1,2-o-Dilauryl-rac-glycero-3-glutaric acid (6′-methylresorufin) ester	Lipase	Metabolic Disease
Lipase Substrate is a chromogenic substrate of lipase to detect activity . It is used in colorimetric methods to measure lipase activity. It produces a red-purple compound, methylresorufin, upon digestion by the lipase enzyme.

HY-P10236

Ac-WEHD-pNA	Caspase	Others
Ac-WEHD-pNA is a colorimetric substrate for caspase 1, 4, 5 and 14, which is utilized to measure the caspase activity .

HY-15926S

ONPG-13C 2-Nitrophenyl β-D-galactopyranoside-¹³C	Isotope-Labeled Compounds	Others
ONPG- ¹³C is the ¹³C labeled ONPG. ONPG is a colorimetric and spectrophotometric substrate for detection of β-galactosidase activit .

HY-126785

Suc-AAP-Abu-pNA Colorimetric Elastase Substrate	Elastase	Others
Suc-AAP-Abu-pNA (Colorimetric Elastase Substrate) is a specific substrate for pancreatic elastase (K_m = 100 μM; K_cat/K_m = 35,300 s ^-1 M ^-1 for rat pancreatic elastase; K_m = 30 μM; K_cat/K_m = 351,000 s ^-1 M ^-1 for porcine pancreatic elastase). Suc-AAP-Abu-pNA also promotes OPC migration .

HY-137858

H-Gly-Arg-pNA hydrochloride Gly-Arg-4-NA hydrochloride; GR-pNA hydrochloride; GR p-itoailide hydrochloride	Fluorescent Dye	Others
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-D1224A

Chlorophenol red β-D-galactopyranoside sodium CPRG sodium	Biochemical Assay Reagents	Others
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-158735

Thioarginine hydrobromide	Biochemical Assay Reagents	Others
Thioarginine hydrobromide is a colorimetric substrate for arginase that can be used in the spectrophotometric assay of arginase .

HY-165025

2-thioacetyl MAGE	Ser/Thr Protease	Others
2-thioacetyl MAGE is a colorimetric substrate of a serine hydrolase enzyme KIAA1363 .

HY-P4335

Bz-RGFFP-4MβNA	Ser/Thr Protease	Others
Bz-RGFFP-4MβNA, a substrate for Cathepsin D, is suitable for either colorimetric or fluorometric assay .

HY-P10001

Z-IETD-pNA Z-Ile-Glu-Thr-Asp-pNA	Caspase	Cancer
Z-IETD-pNA (Z-Ile-Glu-Thr-Asp-pNA) is a colorimetric caspase-8 and granzyme B substrate. Z-IETD-pNA is hydrlyzed by caspase 8 to generate pNA .

HY-168378

D-Val-Leu-Lys-pNA S-2251	Fluorescent Dye	Others
D-Val-Leu-Lys-pNA (S-2251) is a chromogenic peptide substrate that serves as a characteristic substrate for plasmin and plasminogen. D-Val-Leu-Lys-pNA acts as a sensitive substrate for the DFE27 serine protease derived from Bacillus subtilis DC27. Catalyzed by plasmin, D-Val-Leu-Lys-pNA binds and hydrolyzes to release p-nitroaniline (pNA), which can be detected colorimetrically at 405 nm as a measure of fibrinolytic activity .

HY-W009458

3-Indoxyl phosphate sodium 3-IP sodium	Phosphatase	Metabolic Disease
3-Indoxyl phosphate (3-IP) is a chromogenic and electrochemical substrate for alkaline phosphatase. Upon enzymatic cleavage by alkaline phosphatase, 3-indoxyl is released and subsequently oxidized to produce water-insoluble indigo, which can be quantified by colorimetric detection at 660 nm as a measure of alkaline phosphatase activity. 3-Indoxyl phosphate can also be converted to water-soluble leucoindigo by reduction of indigo in alkaline solution by sodium dithionite, which can be quantified by colorimetric detection at 415 nm or voltametric detection as a measure of alkaline phosphatase activity.2 3-Indoxyl phosphate has been used in ELISAs.

HY-136898

PS-915 dihydrochloride	Thrombin	Others
PS-915 dihydrochloride is a peptide substrate used in a colorimetric assay for plasma antithrombin III (ATIII). PS-915 dihydrochloride is highly specific for thrombin. By enzyme hydrolysis, PS-915 dihydrochloride liberates 3-carboxy-4-hydroxyaniline (CHA), which turns blue in color due to the complex formation with added alkaline-pentacyanoammine ferroate .

HY-120971

N-Decanoyl p-Nitroaniline DepNA	Endogenous Metabolite	Metabolic Disease
N-Decanoyl p-nitroaniline (DepNA) is one of several nitroaniline fatty acid amides which can be used to measure fatty acid amide hydrolase (FAAH) activity.1 FAAH is a relatively unselective enzyme in that it accepts a variety of amide head groups other than the ethanolamine of its endogenous substrate anandamide (AEA). It also will hydrolyze fatty acid amides with fewer carbons and fewer double bonds than arachidonate. Exposure of DepNA to FAAH activity results in the release of the yellow colorimetric dye p-nitroaniline (ε=13,500 at 410 nm). This allows the fast and convenient measurement of FAAH activity using a 96 well plate spectrophotometer.

HY-168378A

D-Val-Leu-Lys-pNA acetate S-2251 acetate	Fluorescent Dye	Others
D-Val-Leu-Lys-pNA acetate (S-2251 acetate) is a chromogenic peptide substrate that serves as a characteristic substrate for plasmin and plasminogen. D-Val-Leu-Lys-pNA acetate acts as a sensitive substrate for the DFE27 serine protease derived from Bacillus subtilis DC27. Catalyzed by plasmin, D-Val-Leu-Lys-pNA acetate binds and hydrolyzes to release p-nitroaniline (pNA), which can be detected colorimetrically at 405 nm as a measure of fibrinolytic activity .

Cat. No.	Product Name	Type

HY-D1224

Chlorophenol red-β-D-galactopyranoside 2 Publications Verification CPRG	Fluorescent Dye
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 .

Chlorophenol red-β-D-galactopyranoside

2 Publications Verification

CPRG

Fluorescent Dye

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-15909

BCIP BCIP p-toluidine salt; X-phosphate p-toluidine salt	Fluorescent Dye
BCIP(BCIP p-toluidine salt; X-phosphate p-toluidine salt) is an artificial chromogenic substrate used for the sensitive colorimetric detection of alkaline phosphatase activity .

HY-W013168

4-Nitrophenyl palmitate 4-Nitrophenyl hexadecanoate; p-Nitrophenyl Palmitate; pNpp	Fluorescent Dye
4-Nitrophenyl palmitate (4-Nitrophenyl hexadecanoate) is a chromogenic substrate for lipases and esterases. Upon enzymatic hydrolysis, 4-Nitrophenyl palmitate releases p-nitrophenol, which can be quantified by colorimetric detection at 410 nm as a measure of enzymatic activity. 4-Nitrophenyl palmitate is used to characterize the activity of various bacterial and mammalian enzymes, including those from Burkholderia and porcine pancreatic lipase .

4-Nitrophenyl palmitate

4-Nitrophenyl hexadecanoate; p-Nitrophenyl Palmitate; pNpp

Fluorescent Dye

4-Nitrophenyl palmitate (4-Nitrophenyl hexadecanoate) is a chromogenic substrate for lipases and esterases. Upon enzymatic hydrolysis, 4-Nitrophenyl palmitate releases p-nitrophenol, which can be quantified by colorimetric detection at 410 nm as a measure of enzymatic activity. 4-Nitrophenyl palmitate is used to characterize the activity of various bacterial and mammalian enzymes, including those from Burkholderia and porcine pancreatic lipase .

HY-131409

D-Val-Leu-Lys-pNA dihydrochloride D-Val-Leu-Lys-p-itoailide dihydrochloride; D-VLK-pNA dihydrochloride; S 2251 dihydrochloride	Fluorescent Dye
D-Val-Leu-Lys-pNA (D-Val-Leu-Lys-p-nitroanilide) dihydrochloride is a chromogenic peptide substrate that serves as a characteristic substrate for plasmin and plasminogen. D-Val-Leu-Lys-pNA dihydrochloride acts as a sensitive substrate for the DFE27 serine protease derived from Bacillus subtilis DC27. Catalyzed by plasmin, D-Val-Leu-Lys-pNA dihydrochloride binds and hydrolyzes to release p-nitroaniline (pNA), which can be detected colorimetrically at 405 nm as a measure of fibrinolytic activity .

D-Val-Leu-Lys-pNA dihydrochloride

D-Val-Leu-Lys-p-itoailide dihydrochloride; D-VLK-pNA dihydrochloride; S 2251 dihydrochloride

Fluorescent Dye

D-Val-Leu-Lys-pNA (D-Val-Leu-Lys-p-nitroanilide) dihydrochloride is a chromogenic peptide substrate that serves as a characteristic substrate for plasmin and plasminogen. D-Val-Leu-Lys-pNA dihydrochloride acts as a sensitive substrate for the DFE27 serine protease derived from Bacillus subtilis DC27. Catalyzed by plasmin, D-Val-Leu-Lys-pNA dihydrochloride binds and hydrolyzes to release p-nitroaniline (pNA), which can be detected colorimetrically at 405 nm as a measure of fibrinolytic activity .

HY-P3236

N-Acetyl-Ile-Glu-Pro-Asp-p-nitroanilide Ac-IEPD-pNA	Fluorescent Dye
N-Acetyl-Ile-Glu-Pro-Asp-p-nitroanilide (Ac-IEPD-pNA) is a colorimetric peptide substrate of granzyme B that allows accurate measurement of granzyme B activity .

HY-121694

CENTA	Fluorescent Dye
CENTA is a colorimetric cephalosporin substrate for β-lactamases. Upon hydrolysis by β-lacatamases, CENTA turns from light yellow to chrome yellow, which can be quantified by colorimetric detection at 405 nm as a measure of β-lactamase activity.

HY-137858

H-Gly-Arg-pNA hydrochloride Gly-Arg-4-NA hydrochloride; GR-pNA hydrochloride; GR p-itoailide hydrochloride	Fluorescent Dye
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-W009458

3-Indoxyl phosphate sodium 3-IP sodium	Fluorescent Dye
3-Indoxyl phosphate (3-IP) is a chromogenic and electrochemical substrate for alkaline phosphatase. Upon enzymatic cleavage by alkaline phosphatase, 3-indoxyl is released and subsequently oxidized to produce water-insoluble indigo, which can be quantified by colorimetric detection at 660 nm as a measure of alkaline phosphatase activity. 3-Indoxyl phosphate can also be converted to water-soluble leucoindigo by reduction of indigo in alkaline solution by sodium dithionite, which can be quantified by colorimetric detection at 415 nm or voltametric detection as a measure of alkaline phosphatase activity.2 3-Indoxyl phosphate has been used in ELISAs.

3-Indoxyl phosphate sodium

3-IP sodium

Fluorescent Dye

3-Indoxyl phosphate (3-IP) is a chromogenic and electrochemical substrate for alkaline phosphatase. Upon enzymatic cleavage by alkaline phosphatase, 3-indoxyl is released and subsequently oxidized to produce water-insoluble indigo, which can be quantified by colorimetric detection at 660 nm as a measure of alkaline phosphatase activity. 3-Indoxyl phosphate can also be converted to water-soluble leucoindigo by reduction of indigo in alkaline solution by sodium dithionite, which can be quantified by colorimetric detection at 415 nm or voltametric detection as a measure of alkaline phosphatase activity.2 3-Indoxyl phosphate has been used in ELISAs.

HY-120971

N-Decanoyl p-Nitroaniline DepNA	Fluorescent Dye
N-Decanoyl p-nitroaniline (DepNA) is one of several nitroaniline fatty acid amides which can be used to measure fatty acid amide hydrolase (FAAH) activity.1 FAAH is a relatively unselective enzyme in that it accepts a variety of amide head groups other than the ethanolamine of its endogenous substrate anandamide (AEA). It also will hydrolyze fatty acid amides with fewer carbons and fewer double bonds than arachidonate. Exposure of DepNA to FAAH activity results in the release of the yellow colorimetric dye p-nitroaniline (ε=13,500 at 410 nm). This allows the fast and convenient measurement of FAAH activity using a 96 well plate spectrophotometer.

N-Decanoyl p-Nitroaniline

DepNA

Fluorescent Dye

N-Decanoyl p-nitroaniline (DepNA) is one of several nitroaniline fatty acid amides which can be used to measure fatty acid amide hydrolase (FAAH) activity.1 FAAH is a relatively unselective enzyme in that it accepts a variety of amide head groups other than the ethanolamine of its endogenous substrate anandamide (AEA). It also will hydrolyze fatty acid amides with fewer carbons and fewer double bonds than arachidonate. Exposure of DepNA to FAAH activity results in the release of the yellow colorimetric dye p-nitroaniline (ε=13,500 at 410 nm). This allows the fast and convenient measurement of FAAH activity using a 96 well plate spectrophotometer.

Cat. No.	Product Name	Type

HY-15926

ONPG 5+ Cited Publications 2-Nitrophenyl β-D-galactopyranoside	Biochemical Assay Reagents
ONPG is a colorimetric and spectrophotometric substrate for detection of β-galactosidase activity.

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 .

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-W011654

4-Aminophenyl-β-D-galactopyranoside, 98% 4-Aminophenyl-beta-D-galactopyranoside, 98%	Biochemical Assay Reagents
4-Aminophenyl-β-D-galactopyranoside, 98% is a highly efficient substrate for β-galactosidase. It is specifically hydrolyzed by this enzyme to release galactose and electroactive p-aminophenol. 4-Aminophenyl-β-D-galactopyranoside, 98% is widely used in colorimetric and electrochemical assays for detecting β-galactosidase activity and determining enzyme kinetics, such as in biosensing fields including cellular senescence, pathogen and contaminant detection. In addition, since β-galactosidase is often overexpressed in primary ovarian cancer, 4-Aminophenyl-β-D-galactopyranoside, 98% can also be applied to related research on primary ovarian cancer .

4-Aminophenyl-β-D-galactopyranoside, 98%

4-Aminophenyl-beta-D-galactopyranoside, 98%

Biochemical Assay Reagents

4-Aminophenyl-β-D-galactopyranoside, 98% is a highly efficient substrate for β-galactosidase. It is specifically hydrolyzed by this enzyme to release galactose and electroactive p-aminophenol. 4-Aminophenyl-β-D-galactopyranoside, 98% is widely used in colorimetric and electrochemical assays for detecting β-galactosidase activity and determining enzyme kinetics, such as in biosensing fields including cellular senescence, pathogen and contaminant detection. In addition, since β-galactosidase is often overexpressed in primary ovarian cancer, 4-Aminophenyl-β-D-galactopyranoside, 98% can also be applied to related research on primary ovarian cancer .

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 .

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-165025

2-thioacetyl MAGE	Biochemical Assay Reagents
2-thioacetyl MAGE is a colorimetric substrate of a serine hydrolase enzyme KIAA1363 .

Cat. No.	Product Name	Target	Research Area

HY-131409

D-Val-Leu-Lys-pNA dihydrochloride D-Val-Leu-Lys-p-itoailide dihydrochloride; D-VLK-pNA dihydrochloride; S 2251 dihydrochloride	Fluorescent Dye	Others
D-Val-Leu-Lys-pNA (D-Val-Leu-Lys-p-nitroanilide) dihydrochloride is a chromogenic peptide substrate that serves as a characteristic substrate for plasmin and plasminogen. D-Val-Leu-Lys-pNA dihydrochloride acts as a sensitive substrate for the DFE27 serine protease derived from Bacillus subtilis DC27. Catalyzed by plasmin, D-Val-Leu-Lys-pNA dihydrochloride binds and hydrolyzes to release p-nitroaniline (pNA), which can be detected colorimetrically at 405 nm as a measure of fibrinolytic activity .

HY-P3236

N-Acetyl-Ile-Glu-Pro-Asp-p-nitroanilide Ac-IEPD-pNA	Ser/Thr Protease	Cancer
N-Acetyl-Ile-Glu-Pro-Asp-p-nitroanilide (Ac-IEPD-pNA) is a colorimetric peptide substrate of granzyme B that allows accurate measurement of granzyme B activity .

HY-P5348

Ac-LEHD-pNA	Peptides	Others
Ac-LEHD-pNA is a biological active peptide. (Caspase-9 substrate; pNA (4-nitroaniline)-derived caspase substrates are widely used for the colorimetric detection of various caspase activities. Cleavage of pNA peptides by caspases generates pNA that is monitored colorimetrically at ~405 nm. pNA has maximum absorption around 408 nm.)

HY-120833

Ac-Ile-Glu-Thr-Asp-pNA	Caspase	Others
Ac-Ile-Glu-Thr-Asp-pNA is a substrate for caspase-8. Caspase-8 binds to and cleaves the Ile-Glu-Thr-Asp (IETD) peptide sequence to release p-nitroalinide, which can be quantified by colorimetric detection at 405 nm as a measure of enzyme activity .

HY-P10236

Ac-WEHD-pNA	Caspase	Others
Ac-WEHD-pNA is a colorimetric substrate for caspase 1, 4, 5 and 14, which is utilized to measure the caspase activity .

HY-126785

Suc-AAP-Abu-pNA Colorimetric Elastase Substrate	Elastase	Others
Suc-AAP-Abu-pNA (Colorimetric Elastase Substrate) is a specific substrate for pancreatic elastase (K_m = 100 μM; K_cat/K_m = 35,300 s ^-1 M ^-1 for rat pancreatic elastase; K_m = 30 μM; K_cat/K_m = 351,000 s ^-1 M ^-1 for porcine pancreatic elastase). Suc-AAP-Abu-pNA also promotes OPC migration .

HY-P5992

Factor VIIa substrate	Peptides	Others
Factor VIIa substrate is a colorimetric substrate for Factor VIIa, that can be measured by absorbance at 405 nm .

HY-P4335

Bz-RGFFP-4MβNA	Ser/Thr Protease	Others
Bz-RGFFP-4MβNA, a substrate for Cathepsin D, is suitable for either colorimetric or fluorometric assay .

HY-P10001

Z-IETD-pNA Z-Ile-Glu-Thr-Asp-pNA	Caspase	Cancer
Z-IETD-pNA (Z-Ile-Glu-Thr-Asp-pNA) is a colorimetric caspase-8 and granzyme B substrate. Z-IETD-pNA is hydrlyzed by caspase 8 to generate pNA .

HY-P10059

Boc-Val-Gly-Arg-βNA	Peptides	Others
Boc-Val-Gly-Arg-βNA is a colorimetric substrate for plasminogen activator .

HY-168378A

D-Val-Leu-Lys-pNA acetate S-2251 acetate	Fluorescent Dye	Others
D-Val-Leu-Lys-pNA acetate (S-2251 acetate) is a chromogenic peptide substrate that serves as a characteristic substrate for plasmin and plasminogen. D-Val-Leu-Lys-pNA acetate acts as a sensitive substrate for the DFE27 serine protease derived from Bacillus subtilis DC27. Catalyzed by plasmin, D-Val-Leu-Lys-pNA acetate binds and hydrolyzes to release p-nitroaniline (pNA), which can be detected colorimetrically at 405 nm as a measure of fibrinolytic activity .

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