32443-99-5

Basic information

• Product Name: D-Cysteine hydrochloride
• Synonyms: D-CYSTEINE HYDROCHLORIDE;D-CYSTEINE HCL;H-D-CYS-OH HCL;D-cysteine hydrochloride anhydrous;D-Cysteine hydrochloride monohydate;D-cysteine HCL monohydrate;D-Cysteine Hydrochloride Monohtydrate;(S)-2-aMino-3-Mercaptopropanoic acid hydrochloride
• CAS NO: 32443-99-5
• Molecular Formula: C₃H₇NO₂S*ClH
• Molecular Weight: 175.63
• EINECS: 251-043-9
• Product Categories: Other APIs;Pharmaceutical Intermediates;straight chain compounds;Cysteine [Cys, C];Amino Acids and Derivatives;Amino Acid Derivatives;Cysteine/CystineNeurotransmitters;Excitatory Amino Acids;NMDA Agonists;Peptide Synthesis
• Mol File: 32443-99-5.mol
• Article Data: 3

Chemical Properties

• Melting Point: ~185 °C (dec.)
• Boiling Point: 293.9 °C at 760 mmHg
• Flash Point: 131.5 °C
• Appearance: white crystalline powder
• Storage Temp.: 2-8°C
• BRN: 5645478
• CAS DataBase Reference: D-Cysteine hydrochloride(CAS DataBase Reference)
• NIST Chemistry Reference: D-Cysteine hydrochloride(32443-99-5)
• EPA Substance Registry System: D-Cysteine hydrochloride(32443-99-5)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36
• WGK Germany: 3
• F: 3-10-23
• Hazardous Substances Data: 32443-99-5(Hazardous Substances Data)

Usage

Chemical Properties

White solid

Uses

D-Cysteine hydrochloride is a new insecticide used as mosquito-repellent, toilet water, perfume, emulsion or aerosol

InChI:InChI=1/C3H7NO2S.ClH/c4-2(1-7)3(5)6;/h2,7H,1,4H2,(H,5,6);1H/t2-;/m1./s1

Downstream Products

• 220541-94-6 (S)-4,5-Dihydro-2-(2-,4-dihydroxyphenyl)-4-thiazolecarboxylic acid 
• 105593-48-4 amino-(2-nitrophenylsulfanyl)acetic acid 
• 2799-07-7 (S)-trityl-D-cysteine 
• 298186-80-8 (2S,4S)-2-undecyl-4-thiazolidinecarboxylic acid 
• 2591-17-5 D-luciferin 
• 131474-37-8 6-O-β-D-galactopyranosyl-luciferin 
• 5714-80-7 D-cysteine methyl ester hydrochloride 
• 84305-41-9 cefminox sodium 

Relevant articles and documents

Resolution of DL-racemic mixtures

The present invention relates to a process for the resolution of DL-racemic mixtures of compounds which crystalize in the form of a conglumerate. Both, the D and L-enantiomers are obtained according to the invention in a industrially feasable process by adding chiral enantioselective polymers to the supersaturated solution of the racemat to inhibit crystalization of one enantiomer. Next a DL-racemic mixture of said compound is suspended in about twice the amount of the crystallized enantiomer. Consequently, the opposite enantiomer could be recovered by said suspension by physical separation.

Optical resolution of DL-cysteine

Disclosed is a method of optical resolution of DL-cysteine utilizing optically active mandelic acid. The method facilitates commercial production of optically active cysteine, particularly L-cysteine which is in great demand.