Hot promotion: CAS: 52-90-4, L-cysteine, L-β-mercaptoalanine product manual

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CAS: 52-90-4, L-cysteine, L-β-mercaptoalanine, L-cysteine ​​amino acid, L-β-thiohydroalanine, L-2-amino-3-mercapto Propionic acid, L-Cysteine

Other names: L-β-mercaptoalanine; L-hemibladder amino acid, L-β-thiohydroalanine, L-2-amino-3-mercaptopropionic acid
CAS number: 52-90-4
C3H7NO2S = 121.16
Level: BR
Content: ≥99.0%

English name: L-Cysteine; L-β-Mercaptoalanine; L-2-Amino-3-mercaptopropanoic acid; L-α-Amino-β-thiopropionic acid; (R) -2-Amino-3-mercaptopropionic acid

Specific rotation: 8.3 ～ 9.5 °
Chloride: ≤0.02%
Ammonium salt: ≤0.02%
Sulfate: ≤0.003%
Heavy metals: ≤10ppm
Arsenic salt: ≤1ppm
Iron salt: ≤10ppm
Loss on drying: ≤0.5%
Properties: white crystal or crystalline powder. The neutral or slightly alkaline aqueous solution can be oxidized by air to cystine, and the acidic solution is more stable. Soluble in water, ethanol, ammonia and acetic acid, insoluble in ether, benzene, acetone, ethyl acetate, carbon disulfide and carbon tetrachloride. Melting point 240 ° C (decomposition). Specific optical rotation [α] 25D + 6.5 ° (in 5mol / L hydrochloric acid). Irritation uses: biochemical and nutritional research, preparation of tissue culture medium for preservation, RT, protection from light

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