Name | L(+)-Cysteine |
Synonyms | L-Cys Zistein H-Cys-OH CYSTEINE NSC 8746 L-Cysteine Cysteine, L- L(+)-Cysteine L-(+)-Cysteine L-Cysteine Base (S)-(-)-Cysteine L-Alanine, 3-mercapto- L-beta-mercaptoalanine L-Cysteine Free Base Crystalline (+)-2-Amino-3-mercaptopropionic acid |
CAS | 52-90-4 4371-52-2 |
EINECS | 200-158-2 |
InChI | InChI=1/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1 |
Molecular Formula | C3H7NO2S |
Melting Point | 220℃ |
Boling Point | 293.9 °C at 760 mmHg |
Specific Rotation(α) | 8.75 º(C=12, 2N HCL) |
Water Solubility | 280 g/L (25℃) |
Appearance | White crystalline powder |
Storage Condition | 2-8℃ |
Sensitive | Sensitive to light |
MDL | MFCD00064306 |
Physical and Chemical Properties | Double Crystal monoclinic or orthogonal crystal, melting point 178 ℃,[alpha] 26.5(mol/L hydrochloric acid), with imine taste, in neutral or slightly alkaline solution is easy to be air oxidation into cystine, acidic environment is stable, soluble in water, ethanol, acetic acid, insoluble in ether, acetone, ethyl acetate, benzene, carbon disulfide and carbon tetrachloride. |
Use | For the treatment of eczema, urticaria, freckles and other skin diseases, its series of products are widely used in medicine, food and cosmetics industry |
Hazard Symbols | Xn - Harmful |
Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection |