L-Cysteine
Price:Negotiable
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Description
Additional Information
| Chinese Name | L-Cysteine |
| English Name | L(+)-Cysteine |
| Chinese Alias | L-Mercaptoalanine; (S)-2-Amino-3-mercaptopropionic acid |
| CAS RN | 52-90-4;4371-52-2 |
| EINECS No. | 200-158-2 |
| Molecular Formula | C3H7NO2S |
| Molecular Weight | 121.15 |
| Hazard Symbol | Xn: Harmful |
| Risk Phrases | R22; R36/37/38; |
| Safety Phrases | S26; S37/39; |
| Physicochemical Properties | Dimorphic monoclinic or orthorhombic crystals, melting point 178°C, with an imine odor. Easily oxidized to cystine by air in neutral or slightly alkaline solutions, relatively stable in acidic conditions. Soluble in water, ethanol, and acetic acid; insoluble in ether, acetone, ethyl acetate, benzene, carbon disulfide, and carbon tetrachloride. |
| Uses | Used for treating skin conditions such as eczema, urticaria, and freckles. Its derivative products are widely used in the pharmaceutical, food, and cosmetics industries. |
| Industry Category | Chemicals |
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| Origin: | China / Shanghai / Fengxianqu |
