L-半胱氨酸盐酸盐(52-89-1,L-Cysteine hydrochloride) 是一种条件必需氨基酸，是硫化氢 (H2S)、谷胱甘肽和牛磺酸等生物活性分子的前体。L-Cysteine hydrochloride 能抑制胃饥饿素，降低啮齿动物和人类的食欲。
| 中文别名 | L-半胱氨酸盐酸盐;盐酸半胱氨酸;L-半胱氨酸盐酸盐(无水物);L-半胱氨酸盐酸盐无水物;L-半胱氨酸盐酸盐;L-2-氨基-3-巯基丙酸盐酸盐;半胱氨酸;盐酸半胱氨酸;半胱氨酸;半胱氨酸;半胱氨酸;半胱氨酸;半胱氨酸锌;（r）-半胱氨酸盐酸盐；（R）-半胱氨酸盐酸盐；3-巯基丙氨酸盐酸盐; 半胱氨酸氯化物；半胱氨酸水合物；半胱氨酸氯水合物; 半胱氨酸盐酸盐L-; 半胱氨酸水合物; |
| 英文别名 | L-Cysteine hydrochloride,anhydrous;L-Cysteine hydrochloride;anhydrous;Cysteine Cysteine Hydrochloride Half Cystine Half-CystineL Cysteine;L-Cysteine;Zinc Cysteinate; (r)-cysteinehydrochloride; (R)-Cysteine-hydrochloride; 3-Mercaptoalanine hydrochloride; Cystein chloride; Cysteine chlorhydrate;Cysteine chlorohydrate; Cysteine, hydrochloride, L-; cysteinechlorhydrate; |
| CAS号 | 52-89-1 |
| SMILES | C([C@@H](C(=O)O)N)S.Cl |
| Inchi | InChI=1S/C3H7NO2S.ClH/c4-2(1-7)3(5)6;/h2,7H,1,4H2,(H,5,6);1H/t2-;/m0./s1 |
| InchiKey | IFQSXNOEEPCSLW-DKWTVANSSA-N |
| 分子式 Formula | C3H7NO2S·HCI |
| 分子量 Molecular Weight | 157.62 |
| 闪点 FP | 131.5oC |
| 熔点 Melting point | 140-142oC |
| 沸点 Boiling point | 293.9oC at 760 mmHg |
| 溶解度Solubility | Soluble in water. (580 g/L at 20℃) |
| 性状 | White to light brown Solid |
| 储藏条件 Storage conditions | 充氩保存，Store at RT. |
