Description

Ethyl Dl-Cysteinate Hydrochloride is a chemically modified derivative of the amino acid cysteine, specifically the ethyl ester of its racemic (DL) form. This compound is valued as a key synthetic intermediate and a protected form of cysteine, offering enhanced stability and solubility in organic synthesis. It is primarily utilized by research institutions and manufacturers in the pharmaceutical, nutraceutical, and fine chemical industries for applications ranging from peptide synthesis to biochemical research.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Peptide Synthesis: Used as a protected cysteine derivative in solid-phase and solution-phase peptide chemistry.
• Biochemical Research: Serves as a precursor or substrate in enzymatic studies and metabolic pathway investigations.
• Nutraceutical Formulation: Employed in the development of advanced dietary supplements and health products.
• Fine Chemical Synthesis: Acts as a chiral synthon or reagent in the production of specialty chemicals and agrochemicals.
• Cosmetic Ingredient: Potential use in the formulation of hair care and skin care products due to its sulfur-containing structure.

Basic Information

Product Name	Ethyl Dl-Cysteinate Hydrochloride
CAS No.	93964-73-9
Molecular Formula	C5H12ClNO2S
Molecular Weight	185.67 g/mol
Synonyms	DL-Cysteine ethyl ester hydrochloride; (±)-Cysteine ethyl ester hydrochloride; Ethyl DL-cysteinate HCl; 2-Amino-3-mercaptopropanoic acid ethyl ester hydrochloride; Cysteine ethyl ester hydrochloride (racemic); Ethyl 2-amino-3-mercaptopropanoate hydrochloride; H-Cys-OEt·HCl (DL); Racemic cysteine ethyl ester hydrochloride
EINECS	Contact for details

Quality Control

Our Ethyl Dl-Cysteinate Hydrochloride is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide Certificates of Analysis (COA) with detailed results from methods including HPLC, titration, and spectroscopic analysis. Our quality commitment aligns with cGMP principles for pharmaceutical intermediates, ensuring reliable supply for critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent degradation. For long-term storage, consider using a desiccator or inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Optical Rotation	Contact for details
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.