Sar-Pro-Arg p-nitroanilide dihydrochloride
Sar-Pro-Arg p-nitroanilide dihydrochloride (CAS: 75241-23-5), with the molecular formula C20H30N8O5 · 2HCl and a molecular weight of 535.42 g/mol, is a premium-grade biochemical reagent. This compound serves as a valuable chromogenic substrate. It is primarily utilised in biochemical research, particularly in the study of enzyme kinetics and proteinase activity, owing to its specific cleavage by certain proteases.

Enzyme Substrate
Sar-Pro-Arg p-nitroanilide dihydrochloride acts as a chromogenic substrate for specific proteases. Upon enzymatic cleavage, it releases p-nitroaniline, which can be quantified spectrophotometrically, allowing for the assay of enzyme activity.
Biochemical Research
This compound is instrumental in various biochemical research applications. It aids in the characterisation and kinetic studies of enzymes, particularly those involved in protein hydrolysis and related pathways.
Cell Biology Studies
Within cell biology, it can be employed to investigate cellular processes involving proteases. Its use helps in understanding enzyme function and regulation within biological systems.
Neuroscience Research
The compound finds application in neuroscience research, potentially for studying proteases involved in neuronal signaling or degradation pathways.
| Molecular weight | 535.42 |
|---|---|
| Empirical formula | C20H30N8O5 · 2HCl |
| Storage temperature | −20°C |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Quality Level | PREMIUM |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Sar-Pro-Arg p-nitroanilide dihydrochloride used for?
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Sar-Pro-Arg p-nitroanilide dihydrochloride is primarily used as a chromogenic substrate in biochemical research for the assay of specific protease activity, particularly related to thrombin and coagulation.
What are the CAS number and formula for Sar-Pro-Arg p-nitroanilide dihydrochloride?
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The CAS number is 75241-23-5, and the molecular formula is C20H30N8O5 · 2HCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Sar-Pro-Arg p-nitroanilide dihydrochloride at a PREMIUM quality level. We do not represent this product as USP, BP, or EP grade.
What are the safety considerations when handling this product?
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This product is classified as a Warning with hazards H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). Handle with appropriate personal protective equipment in a well-ventilated area. Avoid contact with skin, eyes, and clothing, and do not inhale dust.
How is Sar-Pro-Arg p-nitroanilide dihydrochloride shipped and exported?
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Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals and reagents, adhering to all relevant shipping and export regulations for chemical products.
How can I request a sample or quote?
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To request a sample or obtain a quotation for Sar-Pro-Arg p-nitroanilide dihydrochloride, please contact our sales team through the provided channels on our website.
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