
化學名稱:  | L-半胱氨酸  | 
INCI名稱:  | 半胱氨酸  | 
英文名稱:  | CYSTEINE  | 
CAS號:  | 52-90-4  | 
HS編碼  | 2930901000  | 
化學式:  | C3H7NO2S  | 
分子量:  | 121.16  | 
中文別名:  | L-半胱氨酸; L-2-氨基-3-巰基丙酸; 半胱氨酸; (R)-2-氨基-3-巰基丙酸  | 
英文別名:  | 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 標 Specification  | 標 準 Standard  | 
外觀 Appearance  | 白色或類白色結(jié)晶性粉末White or almost white crystalline powder  | 
溶液外觀 Appearance of the Solution  | 透明無色至淺黃色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%  | 
灼燒殘渣 Residue on Ignition  | ≤0.1%  | 
氯化物Chloride  | ≤0.4%  | 
硫酸鹽sulfate  | ≤0.03%  | 
重金屬(鉛) Heavy metal(Lead)  | ≤10 ppm  | 
鐵鹽 Ironic Salt  | ≤10ppm  | 
含量 Assay(drying basis)  | 98.5~101.5%  | 
微生物檢測 Microbial Test  | |
總菌數(shù) Total Aerobic  | ≤1000cfu/g  | 
霉菌和酵母 Yeast & Mold  | ≤100cfu/g  | 
大腸桿菌 E.coli  | Negative  | 
沙門氏菌 Salmonella  | Negative  | 
Package: In 25Kg net per fiber drum, inner polythene bags. We can provide the packing as per your request.  | |