哌拉西林 Pipracil
61477-96-1
为白色或类白色结晶性粉末 White or off-white crystalline powder
比旋度 Specific rotation +168°~ +175°
水分Water 2.0% ~4.0%
重金属Heavy metals ≤20ppm
炽灼残渣Residue on ignition ≤0.25%
有关物质Related substances
总杂质Total impurities ≤3.8%
残留溶剂Residual solvent
乙酸乙酯 Ethyl acetate≤5000ppm
丙酮 Acetone≤3000ppm
三乙胺 Triethylamine≤250ppm
二氯甲烷 Dichloromethane≤300ppm
细菌内毒素Bacterial endotoxins ≤0.04EU/mg
微生物限度Microbial Limits
菌落总数 Total Aerobic count ≤100CFU/g
霉菌和酵母菌 Moulds and yeasts≤10CFU/g
含量Assay 96.0~101.0%(无水物,anhydrous basis)
结论Conclusion 本品符合USP质量标准。Complies with USP standard.