Description

S-Carboxymethylthiocysteine is a specialized organosulfur compound featuring both carboxylic acid and thioether functional groups. This unique structure makes it a valuable intermediate for synthesizing more complex molecules, particularly in pharmaceutical research and fine chemical manufacturing. It is primarily sought by R&D chemists and process development scientists in the life sciences, agrochemical, and specialty chemical industries for applications requiring custom molecular scaffolds.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, especially those targeting metabolic pathways or requiring specific sulfur-containing motifs.
• Bioconjugation Reagent: Used in the development of antibody-drug conjugates (ADCs) or protein labeling due to its reactive thioether and carboxylic acid groups.
• Peptide Synthesis: Serves as a protected or modified cysteine analog for introducing carboxymethylthio groups into peptide chains, altering their properties.
• Research Chemical: Employed in academic and industrial laboratories for studying enzyme inhibition, metabolic processes, and as a precursor in organic synthesis.
• Agrochemical Synthesis: Intermediate in the production of certain herbicides or plant growth regulators that benefit from its specific chemical reactivity.
• Chelating Agent Precursor: Can be utilized to synthesize ligands for metal chelation, relevant in catalysis or analytical chemistry.

Basic Information

Product Name	S-Carboxymethylthiocysteine
CAS No.	15253-37-9
Molecular Formula	C5H9NO4S2
Molecular Weight	211.26 g/mol
Synonyms	2-Amino-3-[(carboxymethyl)thio]propanoic acid; (R)-2-Amino-3-[(carboxymethyl)thio]propionic acid; L-Carboxymethylthiocysteine; S-Carboxymethyl-L-cysteine impurity; Thiocysteine derivative; CMTC; NSC 113986
EINECS	Contact for details

Quality Control

Our S-Carboxymethylthiocysteine CAS NO 15253-37-9 is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity, chiral analysis, and identity confirmation (IR, NMR). We provide a detailed Certificate of Analysis (COA) with every shipment, ensuring traceability and compliance with your research or cGMP starting material requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The product is hygroscopic (moisture-sensitive) and should be handled in a dry environment to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity	≥ 99.0% (L-isomer)
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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