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L-缬氨酸

分子式: C5H11NO2 

分子量: 117.15 

CAS编号: 72-18-4

L-缬氨酸CP2020EP11USP2023AJI92FCC11
含量≥98.5%98.5-101.0%98.5-101.5%99.0-100.5%98.5~101.5%
酸度5.5-6.5/5.5-7.05.5-6.55.5~7
比旋度[a]D20+26.6°-+28.8°+26.5°-+29.0°/+27.6°-+29.0°+26.7° ~+29°
比旋度[a]D25//+26.6°-+28.8°/+26.6° ~+28.9°
透光≥98.0%//≥98.0%/
溶液外观/clear & colorless ≤BY6///
氯化物≤0.02%≤0.02%≤0.05%≤0.02%/
铵盐≤0.02%≤0.02%/≤0.02%/
硫酸盐≤0.03%≤0.03%≤0.03%≤0.02%/
铁盐≤10PPM≤10PPM≤30PPM≤10PPM/
重金属≤10PPM//≤10PPM/
砷盐≤1PPM//≤1PPM/
////≤ 5 ppm
其他氨基酸≤0.5%/Individual impurities≤0.5%
Total impurities≤2.0%
conforms/
茚三酮活性物质/Impurity B at 570 nm≤0.4%  
Each impurity ≤0.2%
Total ≤1.0%
///
不溶性杂质////≤ 50 ppm
干燥失重≤0.20%≤0.50%≤0.30%≤0.20%≤ 0.3%
炽灼残渣≤0.10%≤0.10%≤0.10%≤0.10%≤ 0.1%
总菌≤ 500 CFU/g≤ 500 CFU/g≤ 500 CFU/g≤ 500 CFU/g≤ 500 CFU/g
霉菌&酵母菌≤ 50 CFU/g≤ 50 CFU/g≤ 50 CFU/g≤ 50 CFU/g≤ 50 CFU/g
致病菌克罗诺杆菌 /肠杆菌 /沙门氏菌 /蜡样芽胞杆菌 /梭状芽胞杆菌
(可根据要求检测)