ChemicalBook > CAS DataBase List > S-Methyl-L-cysteine

S-Methyl-L-cysteine

Product Name
S-Methyl-L-cysteine
CAS No.
1187-84-4
Chemical Name
S-Methyl-L-cysteine
Synonyms
Methylcysteine;H-CYS(ME)-OH;SMC;SMLC;L-Cys（me）-OH;H-L-CYS(ME)-OH;S-METHYL-CYSTEINE;S-Methyl-L-Cys-OH;S-METHYL-L-CYSTEINE;S-MethyI-L-cysteine
CBNumber
CB4154282
Molecular Formula
C4H9NO2S
Formula Weight
135.18
MOL File
1187-84-4.mol
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S-Methyl-L-cysteine Property

Melting point:
~240 °C (dec.)
alpha 
-29.5 º (c=1,water)
Boiling point:
300.3±37.0 °C(Predicted)
Density 
1.149 (estimate)
refractive index 
-30 ° (C=2, H2O)
storage temp. 
Keep in dark place,Sealed in dry,Store in freezer, under -20°C
solubility 
Aqueous Acid (Slightly, Sonicated), Aqueous Base (Sparingly, Sonicated)
form 
Solid
pka
pK1:8.97 (25°C)
color 
White to Off-White
BRN 
1721675
LogP
0.380 (est)
CAS DataBase Reference
1187-84-4(CAS DataBase Reference)
NIST Chemistry Reference
s-Methyl-L-cysteine(1187-84-4)
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Safety

Hazard Codes 
Xn
Risk Statements 
22
Safety Statements 
22-24/25-36/37/39-26
WGK Germany 
3
HS Code 
29309090
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321Specific treatment (see … on this label).

P330Rinse mouth.

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
M6626
Product name
S-Methyl-L-cysteine
Purity
substrate for methionine sulfoxide reductase A
Packaging
5g
Price
$98.3
Updated
2024/03/01
Sigma-Aldrich
Product number
M6626
Product name
S-Methyl-L-cysteine
Purity
substrate for methionine sulfoxide reductase A
Packaging
25g
Price
$160.4
Updated
2024/03/01
TCI Chemical
Product number
M0233
Product name
S-Methyl-L-cysteine
Purity
>98.0%(T)
Packaging
5g
Price
$109
Updated
2024/03/01
Sigma-Aldrich
Product number
M6626
Product name
S-Methyl-L-cysteine
Purity
substrate for methionine sulfoxide reductase A
Packaging
100g
Price
$1180
Updated
2024/03/01
TRC
Product number
M294655
Product name
S-Methyl-L-cysteine
Packaging
100g
Price
$600
Updated
2021/12/16
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S-Methyl-L-cysteine Chemical Properties,Usage,Production

Chemical Properties

white to light beige fine crystalline powder

Uses

S-Methyl-L-cysteine is a substrate in the catalytic antioxidant system mediated by methionine sulfoxide reductase A (MSRA). It has been studied as a theurapeutic for neurodegenerative diseases including Parkinson′s.

Definition

ChEBI: A cysteine derivative that is L-cysteine in which the hydrogen attached to the sulfur is replaced by a methyl group.

Purification Methods

Likely impurities are cysteine and S-methyl-dl-cysteine. Crystallise it from H2O by adding 4volumes of EtOH. It also crystallises from MeOH with m 234-236o(dec), but after sublimation i t has m 267-270o and [] 27D -31.6o (c 1, H2O). [Rinderknecht et al. Helv Chim Acta 41 1, 10 1958, Theodoropoulos Acta Chem Scand 13 383 1959, Greenstein & Winitz The Chemistry of the Amino Acids J. Wiley, Vol 3 p 1904 1961, Beilstein 4 IV 3145.]

S-Methyl-L-cysteine Preparation Products And Raw materials

Raw materials

Preparation Products

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S-Methyl-L-cysteine Suppliers

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View Lastest Price from S-Methyl-L-cysteine manufacturers

Career Henan Chemical Co
Product
S-Methyl-L-cysteine 1187-84-4
Price
US $1.00/kg
Min. Order
1 mg
Purity
99%
Supply Ability
100KG
Release date
2018-12-25

1187-84-4, S-Methyl-L-cysteineRelated Search:

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  • L-Cys（me）-OH
  • 1187-84-4
  • CH3SCH2CHNH2CO2H
  • C4H9NO2S
  • Cysteine/Cystine
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  • Amino Acid Derivatives
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