化学名称: | L-半胱氨酸 |
INCI名称: | 半胱氨酸 |
英文名称: | CYSTEINE |
CAS号: | 52-90-4 |
HS编码 | 2930901000 |
化学式: | C3H7NO2S |
分子量: | 121.16 |
中文别名: | L-半胱氨酸; L-2-氨基-3-巯基丙酸; 半胱氨酸; (R)-2-氨基-3-巯基丙酸 |
英文别名: | L-Cysteine; Cysteine, L- (8CI); (R)-2-Amino-3-mercaptopropanoic acid; (R)-Cysteine; 1: PN: WO2016124781 SEQID: 1 claimed protein; 2-Amino-3-mercaptopropionic acid; 2: PN: US20130315955 SEQID: 1 claimed DNA; 391: PN: WO2010118878 PAGE: 60 claimed sequence; 5: PN: WO2011003622 SEQID: 5 claimed sequence; Cystein; Cysteine; E 920; Half-cystine; L-(+)-Cysteine; L-Alanine, 3-mercapto-; L-Cys; NSC 8746; Propanoic acid, 2-amino-3-mercapto-, (R)-; Thioserine; β-Mercaptoalanine |
指 标 Specification | 标 准 Standard |
外观 Appearance | 白色或类白色结晶性粉末White or almost white crystalline powder |
溶液外观 Appearance of the Solution | 透明无色至浅黄色Transparent colorless to light yellow |
pH值 pH value | 4.7~5.7 |
比旋度 Specification Rotation | +8.0°~+10.09° |
干燥失重 Loss on Drying | ≤0.5% |
灼烧残渣 Residue on Ignition | ≤0.1% |
氯化物Chloride | ≤0.4% |
硫酸盐sulfate | ≤0.03% |
重金属(铅) Heavy metal(Lead) | ≤10 ppm |
铁盐 Ironic Salt | ≤10ppm |
含量 Assay(drying basis) | 98.5~101.5% |
微生物检测 Microbial Test | |
总菌数 Total Aerobic | ≤1000cfu/g |
霉菌和酵母 Yeast & Mold | ≤100cfu/g |
大肠杆菌 E.coli | Negative |
沙门氏菌 Salmonella | Negative |
Package: In 25Kg net per fiber drum, inner polythene bags. We can provide the packing as per your request. |