19651-44-6

Basic information

• Product Name: S-methyl-DL-cysteine
• Synonyms: S-methyl-DL-cysteine;Einecs 243-203-1
• CAS NO: 19651-44-6
• Molecular Formula: C₄H₉NO₂S
• Molecular Weight: 135.18476
• EINECS: 243-203-1
• Mol File: 19651-44-6.mol
• Article Data: 9

Chemical Properties

• Boiling Point: 300.3°C at 760 mmHg
• Flash Point: 135.4°C
• Appearance: /
• Density: 1.26g/cm³
• Vapor Pressure: 0.000267mmHg at 25°C
• Refractive Index: 1.539
• CAS DataBase Reference: S-methyl-DL-cysteine(CAS DataBase Reference)
• NIST Chemistry Reference: S-methyl-DL-cysteine(19651-44-6)
• EPA Substance Registry System: S-methyl-DL-cysteine(19651-44-6)

Safety Data

• Hazardous Substances Data: 19651-44-6(Hazardous Substances Data)

Usage

InChI:InChI=1/C4H9NO2S/c1-8-2-3(5)4(6)7/h3H,2,5H2,1H3,(H,6,7)/t3-/m0/s1

Upstream product

• 1187-84-4 S-methyl-L-cysteine 
• 10318-18-0 DL-cysteine hydrochloride 
• 74-88-4 methyl iodide 
• 921-01-7 rac-cysteine 
• 74-93-1 methylthiol 
• 52-90-4 L-Cysteine 
• 61787-00-6 S-(Methylthiomethyl)cystein 
• 88347-77-7 2-Azido-3-(methylthio)propansaeure-methylester 

Downstream Products

• 23328-62-3 2-(methylthio)acetaldehyde 
• 3226-62-8 S-methylcysteine sulfoxide 
• 99855-84-2 DL-N-benzoyl-S-methylcysteine 
• 95406-97-6 N-(benzyloxycarbonyl)-S-methyl-D,L-cysteine 
• 16637-59-5 DL-N-acetyl-S-methylcysteine 
• 55582-20-2 S-Methyl-N-phthaloyl-DL-cysteine 
• 75-52-5 Nitromethane 
• 25731-06-0 Nitro-methanol 
• 88096-62-2 Methylsulfanyl-nitro-methane 
• 792132-38-8 Methionin-ethylester 
• 66255-16-1 s-methyl-s-cysteine 

Relevant articles and documents

KCNT1 INHIBITORS AND METHODS OF USE

The present invention is directed to, in part, compounds and compositions useful for preventing and/or treating a neurological disease or disorder, a disease or condition relating to excessive neuronal excitability, and/or a gain-of-function mutation in a gene (e.g., KCNT1). Methods of treating a neurological disease or disorder, a disease or condition relating to excessive neuronal excitability, and/or a gain-of-function mutation in a gene such as KCNT1 are also provided herein.

Palatability of aquaculture feed

A method for enhancing the palatability of aquaculture food, the method comprising treating the food with a compound of Formula I: wherein R1, R2, R3, and n are as defined herein, are disclosed.

Amino Acids, 12. - Syntheses of DL-Cysteines from Acrylic Acid Derivatives

The addition of sulfenyl chlorides 1 to 2-alkenoic acid esters 2 gives mixtures of 2(3)-chloro-3(2)-thioalkenoic acid esters 3/4, whereas the addition of thiols 7 to methyl 2-chloro-2-propenoate (6) results in the formation of methyl 2-chloro-3-thiopropanoates 3 only.The dependence of the isomerization of 3 to 4 on the reaction conditions was investigated; at higher temperatures the formation of 4 is especially favored.At temperatures below 55 deg C the 2-azido compounds 8 are obtained without isomerization from 3 by reaction with sodium azide in the presence of a PT catalyst.Cysteine derivatives 9 or 10, resp., are obtained by hydrogenation of 8 with H2S/pyridine/H2O or with H2/Re2S; the overall yields of 9 or 10, resp., starting from 6 are as high as 70percent.DL-Cysteine is obtained in good overall yields as hydrochloride hydrate 16 by HCl-catalyzed hydrolysis of the 2-thiazolines 15a*HCl and 15e, which are prepared by HCl-catalyzed addition of thioacetamide (11a) to α-chloroacrylic acid (12) or the amide 13 and consecutive ring closure.