Description

N,S-Diacetyl-L-Cysteine Methyl Ester is a chemically modified derivative of the amino acid L-cysteine, specifically designed for advanced synthesis and research applications. This compound matters as a versatile and protected cysteine building block, offering enhanced stability and solubility for peptide coupling and other organic transformations. It is primarily needed by pharmaceutical R&D teams, peptide synthesis specialists, and fine chemical manufacturers developing novel therapeutic agents and biochemical tools.

Application

• Pharmaceutical Intermediate: A key protected precursor in the solid-phase and solution-phase synthesis of complex peptides and peptidomimetics.
• Biochemical Research: Used in studies involving cysteine chemistry, protein engineering, and the development of enzyme inhibitors.
• Prodrug Development: Serves as a model compound or intermediate in designing prodrugs that utilize ester and amide functionalities for improved bioavailability.
• Fine Chemical Synthesis: Employed as a chiral building block for the synthesis of non-peptide molecules requiring a protected thiol and amine group.
• Reference Standard: Utilized as a high-purity analytical standard in quality control laboratories for method development and validation.

Basic Information

Product Name	N,S-Diacetyl-L-Cysteine Methyl Ester
CAS No.	19547-88-7
Molecular Formula	C8H13NO4S
Molecular Weight	219.26 g/mol
Synonyms	N-Acetyl-S-acetyl-L-cysteine methyl ester; Methyl N-acetyl-S-acetyl-L-cysteinate; L-Cysteine, N,S-diacetyl-, methyl ester; N,S-Diacetylcysteine methyl ester; DACME; Ac-Cys(Ac)-OMe; (2R)-2-Acetamido-3-(acetylthio)propanoic acid methyl ester
EINECS	Contact for details

Quality Control

Our N,S-Diacetyl-L-Cysteine Methyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets exacting standards for research and synthesis. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). The product is moisture-sensitive; keep the container tightly sealed in a dry environment.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Optical Rotation [α]	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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