Chinese Name: L-Tyrosine 4-Nitroanilide

English Name: L-Tyrosine 4-Nitroanilide

Abbreviation: H-Tyr-pNA

CAS Number: 52551-07-2

Molecular Formula: C15H15N3O4

Molecular Weight: 301.30

Specification: 1 g / 5 g / 25 g (custom packaging supported)

Form: Lyophilized powder

Product Number: G04040014

Color Development: Yellow

Stock: In stock

The core structure of H-Tyr-pNA consists of L-tyrosine (Tyr) and p-nitroaniline (pNA) connected via an amide bond.

When serine proteases such as trypsin and chymotrypsin undergo specific hydrolysis of the substrate, the substrate is cleaved and releases free p-nitroaniline (pNA).

pNA has a significant characteristic absorption peak at a wavelength of 405 nm. By directly reading the absorbance change using a microplate reader or spectrophotometer, quantitative calculation of protease activity or reaction rate can be achieved.

• Enzymology Research: Used for in vitro determination of serine protease activity such as trypsin and chymotrypsin.

• Drug Screening: Used as a substrate for high-throughput screening of protease inhibitors or activators.

• Diagnostic Reagent Development: Used as a raw material for developing enzyme activity-based in vitro diagnostic kits.

We deeply understand the high demands of scientific exploration and industrial R&D for delivery cycle, batch consistency, and data stability. Hepattack Bioscience & Technology provides:

• Multi-Specification Stock: Covers common packaging from 1 g (trial) to 25 g (pilot), with ample stock reserves for faster delivery.

• High-Purity Raw Material: The H-Tyr-pNA provided by Hepattack Bioscience & Technology achieves HPLC purity ≥ 98%, with strict control of residual free pNA, ensuring extremely low background absorption and more reliable data.

• Flexible Customization: For industrial clients, we provide gram-level custom synthesis and packaging services, fully supporting your project from R&D to production.