Description

Cysteine-β-Naphthylamide is a specialized biochemical reagent primarily used as a chromogenic substrate for enzyme activity assays. This compound is critical for research and diagnostic applications where precise detection and quantification of enzymatic activity are required. It is an essential tool for biochemists, pharmaceutical researchers, and diagnostic kit manufacturers working with proteolytic enzymes like cathepsins and aminopeptidases.

Application

• Enzymatic Substrate in Biochemical Research: Used as a specific chromogenic substrate for the detection and kinetic study of cysteine proteases and related enzymes.
• Diagnostic Reagent Manufacturing: A key component in the formulation of diagnostic kits for measuring specific enzyme levels in clinical and research laboratories.
• Pharmaceutical Development: Employed in high-throughput screening (HTS) assays during drug discovery to identify and characterize enzyme inhibitors.
• Cell Biology & Histochemistry: Utilized in assays to localize and measure enzyme activity within tissues and cell cultures.
• Quality Control in Biotechnology: Serves as a reference standard for validating the activity of enzyme preparations and biopharmaceutical products.

Basic Information

Product Name	Cysteine-β-Naphthylamide
CAS No.	65322-97-6
Molecular Formula	C13H14N2O2S
Molecular Weight	262.33 g/mol
Synonyms	L-Cysteine-β-naphthylamide; N-(2-Naphthyl)-L-cysteinamide; Cys-β-NA; Cysteine β-naphthylamide; L-Cys-βNA; N-2-Naphthyl-L-cysteinamide; β-Naphthylamide-L-cysteine; Substrate for cysteine proteases
EINECS	Contact for details

Quality Control

Our Cysteine-β-Naphthylamide is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity suitable for sensitive research and diagnostic applications. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and performance in standard assay systems. We support compliance with relevant Good Manufacturing Practice (GMP) guidelines for critical raw materials.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept tightly sealed and desiccated after opening to maintain stability and prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Specific Rotation	[α]20/D: Contact for details
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%
Assay (Enzymatic)	Fully active as substrate

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.