Description

Dabsyl-L-Valine CAS NO 89131-11-3 is a high-purity, chromogenic amino acid derivative where the L-valine molecule is labeled with a 4-dimethylaminoazobenzene-4'-sulfonyl (dabsyl) group. This modification is critical for enhancing detection sensitivity in advanced analytical techniques. It is an essential reagent for researchers and quality control laboratories requiring precise amino acid analysis and quantification. Its primary value lies in enabling highly sensitive and selective assays in pharmaceutical development, biotechnology, and food science.

Application

• Amino Acid Analysis: Used as a derivatizing agent for the pre-column or post-column labeling of amino acids in High-Performance Liquid Chromatography (HPLC) and Liquid Chromatography-Mass Spectrometry (LC-MS) for enhanced UV-Vis detection.
• Pharmaceutical QC & Research: Employed in the purity testing of peptide-based drugs, analysis of protein hydrolysates, and monitoring of fermentation processes in biopharmaceutical production.
• Biochemical Research: Serves as a standard or reference compound in metabolic studies, enzyme kinetics, and research involving amino acid transport and metabolism.
• Food & Feed Analysis: Applied in the accurate determination of amino acid profiles for nutritional labeling, quality assessment of protein ingredients, and feed formulation.
• Diagnostic Reagent Manufacturing: Utilized in the production of kits and reagents for clinical diagnostics that measure specific amino acids in physiological fluids.
• Proteomics & Peptide Chemistry: Acts as a chromophoric tag in peptide synthesis monitoring and in studies of protein structure and function.

Basic Information

Product Name	Dabsyl-L-Valine
CAS No.	89131-11-3
Molecular Formula	C19H23N3O4S
Molecular Weight	389.47 g/mol
Synonyms	Dabsyl-L-valine; 4-Dimethylaminoazobenzene-4'-sulfonyl-L-valine; L-Valine, N-[4-[(4-dimethylamino)phenyl]azo]benzenesulfonyl]-; DABS-Valine; DABS-L-Val; N-Dabsyl-L-valine; Dns-Val (common historical alias); DABS-Val-OH
EINECS	Contact for details

Quality Control

Our Dabsyl-L-Valine is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and assay, IR and NMR for structural confirmation, and stringent control of moisture and related substances. We provide a detailed Certificate of Analysis (COA) with each shipment, ensuring traceability and compliance with your research or production specifications. Our quality commitment supports applications requiring high-purity reference standards and derivatization reagents.

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); therefore, the container must be kept tightly sealed in a dry environment to prevent degradation. For long-term storage, consider desiccants or inert atmosphere.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Optical Rotation	Contact for details
Heavy Metals	≤ 20 ppm

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