Description

L-Cysteic Acid is a key oxidized derivative of the amino acid cysteine, serving as a vital intermediate in biochemical synthesis and industrial applications. Its significance lies in its role as a precursor for taurine and other sulfur-containing compounds, offering a stable, water-soluble source of sulfonic acid functionality. This product is essential for manufacturers in the pharmaceutical, nutritional supplement, and cosmetic industries, where it is used in research, synthesis, and as a biochemical reagent.

Application

• Pharmaceutical Intermediate: Critical precursor in the synthesis of taurine and other bioactive sulfur compounds.
• Nutritional Supplement Research: Used in the development and study of amino acid-based supplements and metabolic pathways.
• Biochemical Research & Reagent: Employed as a standard or reagent in enzymatic studies, protein chemistry, and oxidation research.
• Cosmetic & Personal Care: Functions as a stabilizing agent or intermediate in the production of hair care and skin care formulations.
• Food Science Applications: Investigated for its potential as a flavor enhancer or processing aid in specialized food products.
• Chemical Synthesis: Serves as a building block for synthesizing more complex organic molecules containing sulfonic acid groups.

Basic Information

Product Name	L-Cysteic Acid
CAS No.	498-40-8
Molecular Formula	C3H7NO5S
Molecular Weight	169.15 g/mol
Synonyms	(S)-2-Amino-3-sulfopropanoic acid; L-3-Sulfoalanine; (R)-2-Amino-3-sulfopropionic acid; Cysteic Acid; L-Cysteine Sulfonic Acid; 3-Sulfo-L-alanine; Thiazolidine-4-carboxylic acid 1,1-dioxide (related); Aminosulfonic acid derivative
EINECS	207-861-3

Quality Control

Our L-Cysteic Acid is produced and tested under a stringent quality management system to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) for each lot, detailing parameters such as assay, optical rotation, and impurity profiles. The product is suitable for research and industrial use, with quality standards that can be aligned with customer-specific requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Optical Rotation [α]20/D	+7.0° to +9.0° (c=1 in H2O)
Loss on Drying	≤ 1.0%
Residue on Ignition (Sulfated Ash)	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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