N-Acetyl-L-leucine-p-nitroanilide

CAS 19746-40-8C14H19N3O4Biochemicals & Reagents

N-Acetyl-L-leucine-p-nitroanilide (CAS 19746-40-8; C14H19N3O4; molar mass 293.32 g/mol) is a chromogenic enzyme substrate supplied by Tech Serve Solutions for protease and aminopeptidase activity assays. On enzymatic cleavage of the anilide bond it releases yellow p-nitroaniline, measured spectrophotometrically near 405 nm to give a sensitive, continuous read-out of leucine-aminopeptidase-type activity. It is offered as a defined research-grade reagent for biochemical and analytical laboratories.

Synonyms: N-Acetyl-L-leucine-p-nitroanilideN-Acetyl-L-leucine 4-nitroanilideAc-Leu-pNAAcetyl-L-leucine p-nitroanilide

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N-Acetyl-L-leucine-p-nitroanilide (C14H19N3O4) — chemical structure, CAS 19746-40-8; Life Science, fine chemical supplied by Tech Serve Solutions

Amino AcidsBiochemicals and ReagentsModified Amino Acids

01 /Applications

Chromogenic protease substrate

Used as a colorimetric substrate to measure aminopeptidase and protease activity; cleavage liberates p-nitroaniline, read at about 405 nm as a direct index of enzyme activity.

Enzyme kinetics and inhibitor screening

Supports kinetic characterisation and inhibitor screening of leucine-aminopeptidase-type enzymes in research and assay development.

Biochemical research reagent

A defined modified-amino-acid reagent for protein chemistry, enzymology and analytical method development.

02 /Properties

Molecular weight	293.32
Empirical formula	C14H19N3O4
Storage temperature	−20°C

03 /Safety & handling

Protective equipment	Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
Water hazard class (WGK, DE)	3

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

19746-40-8

MDL number

MFCD00057927

05 /Quality & supply

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.

06 /Frequently asked questions

What is N-Acetyl-L-leucine-p-nitroanilide used for?

It is a chromogenic substrate for assaying aminopeptidase and protease activity. Enzymatic cleavage releases p-nitroaniline, a yellow chromophore measured spectrophotometrically (around 405 nm), enabling sensitive enzyme-activity and kinetic studies.

What is the CAS number and molecular formula?

The CAS number is 19746-40-8 and the molecular formula is C14H19N3O4, with a molar mass of 293.32 g/mol.

What grade and purity does Tech Serve Solutions supply?

It is supplied as a defined research/reagent-grade biochemical, with a certificate of analysis available on request. We do not represent it as a USP, BP or EP pharmacopoeia grade.

How should it be stored and handled?

Store sealed at -20 degrees C, protected from moisture, and handle with standard laboratory protection (gloves, eye protection, dust precautions) in line with the Safety Data Sheet.

How is it packed, shipped and exported?

It ships as a packaged solid with full export documentation. As a specialist supplier and exporter, Tech Serve Solutions delivers worldwide, including to the US, Europe and Asia.

How do I request a sample or quote?

Request a sample for evaluation or a bulk quotation through our contact form, stating your required quantity and destination; we confirm specification, lead time and export terms.