Date published: 2025-9-5

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HRP and AP Substrates

Santa Cruz Biotechnology now offers a broad range of HRP and AP substrates for use in various applications. HRP (horseradish peroxidase) and AP (alkaline phosphatase) substrates are essential reagents in immunoassays and molecular biology techniques, where they are used to detect the presence of specific proteins, nucleic acids, or other biomolecules. These substrates react with their respective enzymes, HRP or AP, to produce a detectable signal, typically colorimetric, chemiluminescent, or fluorescent, which indicates the presence and quantity of the target molecule. Researchers use HRP and AP substrates extensively in applications such as Western blotting, ELISA, immunohistochemistry, and in situ hybridization. These substrates are crucial for achieving high sensitivity and specificity in these assays, enabling the detection of low-abundance targets and providing quantitative and qualitative data on biomolecular interactions. By offering a comprehensive selection of high-quality HRP and AP substrates, Santa Cruz Biotechnology supports advanced research in biochemistry, cell biology, and diagnostic development. These products empower scientists to conduct precise and reproducible experiments, driving discoveries and innovations in understanding biological processes and developing new analytical methods. View detailed information on our available HRP and AP substrates by clicking on the product name.

Items 21 to 30 of 32 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Naphthol AS-MX phosphate disodium salt

96189-12-7sc-215539
sc-215539A
sc-215539B
100 mg
500 mg
1 g
$57.00
$130.00
$217.00
1
(0)

Naphthol AS-MX phosphate disodium salt serves as a versatile substrate for horseradish peroxidase (HRP) and alkaline phosphatase (AP), distinguished by its capacity for specific molecular interactions that enhance enzymatic efficiency. The compound's unique structural arrangement allows for optimal binding, promoting accelerated reaction kinetics. Its anionic phosphate moieties facilitate electrostatic interactions, influencing enzyme conformation and activity, thereby playing a crucial role in various biochemical processes.

5-Bromo-4-chloro-3-indoxyl phosphate, disodium salt

102185-33-1sc-207010
sc-207010A
25 mg
50 mg
$65.00
$79.00
(0)

5-Bromo-4-chloro-3-indoxyl phosphate, disodium salt, is a specialized substrate for horseradish peroxidase (HRP) and alkaline phosphatase (AP), characterized by its unique indoxyl structure that enables selective enzymatic cleavage. The compound exhibits distinct colorimetric properties upon enzymatic action, allowing for sensitive detection. Its halogenated aromatic system enhances hydrophobic interactions, influencing enzyme-substrate affinity and promoting efficient catalytic pathways in biochemical assays.

5-Bromo-6-chloro-3-indolyl phosphate, p-toluidine salt

6769-80-8sc-221017
sc-221017A
100 mg
250 mg
$188.00
$350.00
(0)

5-Bromo-6-chloro-3-indolyl phosphate, p-toluidine salt, serves as a distinctive substrate for horseradish peroxidase (HRP) and alkaline phosphatase (AP), featuring a unique indole framework that facilitates specific enzymatic interactions. The presence of halogen substituents modulates electronic properties, enhancing reactivity and selectivity in enzymatic pathways. Its solubility characteristics and hydrophobic nature contribute to improved enzyme binding, optimizing reaction kinetics in various biochemical applications.

5-Bromo-3-indoxyl phosphate, p-toluidine salt

80008-69-1sc-284557
sc-284557A
250 mg
500 mg
$192.00
$305.00
(0)

5-Bromo-3-indoxyl phosphate, p-toluidine salt, is a specialized substrate for horseradish peroxidase (HRP) and alkaline phosphatase (AP), characterized by its indoxyl structure that promotes selective enzymatic recognition. The bromine substituent influences the compound's electronic distribution, enhancing its reactivity. Its unique steric properties and hydrophilic interactions facilitate efficient enzyme-substrate complexes, leading to accelerated reaction rates in biochemical assays.

6-Chloro-3-indoxyl phosphate, p-toluidine salt

159954-33-3sc-239096
sc-239096A
50 mg
100 mg
$58.00
$105.00
(0)

6-Chloro-3-indoxyl phosphate, p-toluidine salt, serves as a distinctive substrate for horseradish peroxidase (HRP) and alkaline phosphatase (AP), featuring a chloro group that modulates its electronic characteristics and enhances enzymatic affinity. The compound's indoxyl framework allows for specific binding interactions, while its solubility profile supports rapid diffusion in aqueous environments. This substrate exhibits unique kinetic behavior, promoting efficient turnover in enzymatic reactions.

3-Indoxyl phosphate, bis(2-amino-2-methyl-1,3-propanediol) salt

107475-12-7sc-281358
sc-281358A
100 mg
250 mg
$142.00
$250.00
(0)

3-Indoxyl phosphate, bis(2-amino-2-methyl-1,3-propanediol) salt, acts as a specialized substrate for horseradish peroxidase (HRP) and alkaline phosphatase (AP), characterized by its dual amino alcohol structure that enhances solubility and stability. The compound's phosphate group facilitates specific enzymatic interactions, while its unique steric configuration influences reaction kinetics, allowing for optimized substrate conversion and efficient enzymatic activity in various biochemical pathways.

3-Indoxyl phosphate, disodium salt

3318-43-2sc-206651
sc-206651A
250 mg
1 g
$214.00
$615.00
(0)

3-Indoxyl phosphate, disodium salt, serves as a versatile substrate for horseradish peroxidase (HRP) and alkaline phosphatase (AP), distinguished by its unique indole structure that promotes specific binding interactions. The presence of the phosphate moiety enhances its reactivity, enabling selective hydrolysis and oxidation processes. Its distinct electronic properties and steric arrangement contribute to tailored reaction kinetics, facilitating efficient enzyme-substrate complexes in diverse biochemical reactions.

3-Indoxyl phosphate p-toluidine salt

31699-61-3sc-281357
sc-281357A
250 mg
500 mg
$162.00
$255.00
(0)

3-Indoxyl phosphate p-toluidine salt is characterized by its unique indole framework, which facilitates specific interactions with enzymes like horseradish peroxidase (HRP) and alkaline phosphatase (AP). The p-toluidine component enhances solubility and stability, while the phosphate group allows for targeted enzymatic modifications. This compound exhibits distinct reactivity patterns, promoting rapid electron transfer and efficient catalytic cycles, making it a valuable tool in biochemical assays.

Naphthol AS-BI-phosphate disodium salt

530-79-0sc-219334
sc-219334A
100 mg
500 mg
$65.00
$110.00
(0)

Naphthol AS-BI-phosphate, disodium salt, features a naphthol structure that enhances its affinity for enzyme active sites, particularly with horseradish peroxidase (HRP) and alkaline phosphatase (AP). The disodium salt form improves solubility in aqueous environments, facilitating swift diffusion and interaction. Its phosphate moiety enables specific phosphorylation reactions, while the naphthol ring contributes to unique electron-donating properties, promoting efficient redox processes in enzymatic assays.

Phenolphthalein monophosphate, bis(cyclohexylammonium) salt

14815-59-9sc-208163
sc-208163A
1 g
5 g
$225.00
$664.00
(0)

Phenolphthalein monophosphate, bis(cyclohexylammonium) salt exhibits unique characteristics that enhance its reactivity with horseradish peroxidase (HRP) and alkaline phosphatase (AP). The cyclohexylammonium moieties provide steric bulk, influencing enzyme-substrate interactions and stabilizing the compound in solution. Its phenolphthalein structure allows for distinct colorimetric changes upon enzymatic action, facilitating real-time monitoring of reaction kinetics and enhancing assay sensitivity.