- S-Methyl-L-Cysteine
- S-Methyl-L-cysteine sulfoxide
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Cas Database |
| Name |
S-Methyl-L-Cysteine |
EINECS | 214-701-6 |
| CAS No. | 1187-84-4 | Density | 1.26 g/cm3 |
| PSA | 88.62000 | LogP | 0.46160 |
| Solubility | N/A | Melting Point |
~240 °C (dec.) |
| Formula | C4H9NO2S | Boiling Point | 300.3 °C at 760 mmHg |
| Molecular Weight | 135.187 | Flash Point | 135.4 °C |
| Transport Information | N/A | Appearance | white to light beige fine crystalline powder |
| Safety | 26-36/37/39 | Risk Codes | 22 |
| Molecular Structure |
|
Hazard Symbols |
 Xn
|
| Synonyms |
Alanine,3-(methylthio)-, L- (8CI);(-)-S-Methyl-L-cysteine;3-(Methylthio)alanine;L-S-Methylcysteine;NSC 15387;S-Methyl-(R)-cysteine;S-Methylcysteine;H-Cys(Me)-OH; |
Article Data | 39 |
S-Methyl-L-Cysteine Chemical Properties
Molecular Structure:
Molecular Formula: C4H9NO2S
Molecular Weight: 135.1848
IUPAC Name: 2-Amino-3-methylsulfanylpropanoic acid
Synonyms of S-Methyl-L-Cysteine (CAS NO.1187-84-4): CCRIS 1972 ; EINECS 214-701-6 ; NSC 15387 ; S-Methylcysteine ; Alanine, 3-(methylthio)-, L- (8CI) ; L-Cysteine, S-methyl- (9CI)
CAS NO: 1187-84-4
Classification Code: Amino Acids Derivatives ; Cysteine [Cys, C] ; Amino Acids and Derivatives ; Amino Acid Derivatives
Melting point: ~240 °C
Index of Refraction: 1.539
Molar Refractivity: 33.63 cm3
Molar Volume: 107.2 cm3
Surface Tension: 53.6 dyne/cm
Density: 1.26 g/cm3
Flash Point: 135.4 °C
Enthalpy of Vaporization: 59.43 kJ/mol
Boiling Point: 300.3 °C at 760 mmHg
Vapour Pressure: 0.000267 mmHg at 25°C
S-Methyl-L-Cysteine Safety Profile
Hazard Codes of S-Methyl-L-Cysteine (CAS NO.1187-84-4): 
Xn
Risk Statements: 22
R22: Harmful if swallowed.
Safety Statements: 22-24/25-36/37/39-26
S22: Do not breathe dust.
S24/25: Avoid contact with skin and eyes.
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany: 3
S-Methyl-L-Cysteine Specification
Storage of S-Methyl-L-Cysteine (CAS NO.1187-84-4): Keep container closed when not in use. Store in a cool, dry place.
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