116797-51-4

Basic information

• Product Name: DL-CYSTEINE HYDROCHLORIDE MONOHYDRATE
• Synonyms: DL-CYSTEINE HCL HYDRATE;DL-CYSTEINE HCL MONOHYDRATE;DL-CYSTEINE HYDROCHLORIDE HYDRATE;DL-CYSTEIN HYDROCHLORIDE HYDRATE;H-DL-CYS-OH HCL H2O;DL-Cysteinehydrochloride1-hydrate;DL-Cysteine monohydrate hydrochloride;DL-Cysteine Hydrochloride
• CAS NO: 116797-51-4
• Molecular Formula: C3H10ClNO3S
• Molecular Weight: 175.63
• EINECS: 233-698-2
• Product Categories: Cysteine [Cys, C];alpha-Amino Acids;Amino Acids;Biochemistry
• Mol File: 116797-51-4.mol
• Article Data: 2

Chemical Properties

• Melting Point: 109 °C
• Boiling Point: 389.7 °C at 760 mmHg
• Flash Point: 189.5 °C
• Appearance: /
• Storage Temp.: Hygroscopic, -20°C Freezer, Under inert atmosphere
• Water Solubility: almost transparency
• Merck: 14,2781
• CAS DataBase Reference: DL-CYSTEINE HYDROCHLORIDE MONOHYDRATE(CAS DataBase Reference)
• NIST Chemistry Reference: DL-CYSTEINE HYDROCHLORIDE MONOHYDRATE(116797-51-4)
• EPA Substance Registry System: DL-CYSTEINE HYDROCHLORIDE MONOHYDRATE(116797-51-4)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36
• RTECS: HA2200000
• Hazardous Substances Data: 116797-51-4(Hazardous Substances Data)

Usage

Uses

DL-Cysteine Hydrochloride Hydrate, is a salt form of DL-Cysteine (C995015).

Relevant articles and documents

Method for optical resolution of DL-cysteine and (R,S)-1-(1-naphthyl) ethylamine

Method for optical resolution of DL-cysteine by (1) reacting DL-cysteine with formaldehyde to prepare DL-thiazolidine-4-carboxylic acid (DL-TCA), (2) forming diastereomer salts of D-TCA and of L-TCA by reacting DL-TCA with an optically active 1-(1-naphthyl)ethylamine, (3) separating said diastereomer salts by difference of the solubilities thereof in a solvent, (4) recovering D-TCA from said diastereomer salt of D-TCA and finally obtain D-cysteine, and recovering L-TCA from said diastereomer salt of L-TCA and finally obtain L-cysteine. Method for optical resolution of (R,S)-1-(1-naphthyl)ethylamine (R,S)-NEA by (1) reacting an optically active cysteine with formaldehyde to prepare an optically active thiazolidine-4-carboxylic acid, (2) forming diastereomer salts of (R)-NEA and of (S)-NEA by reacting (R,S)-NEA with optically active thiazolidine-4-carboxylic acid, (3) separating said diastereomer salts of (R)-NEA and of (S)-NEA by difference of the solubilities thereof in a solvent, (4) recovering (R)-NEA from said diastereomer salt of (R)-NEA, and recovering (S)-NEA from said diastereomer salt of (S)-NEA.