阿奇霉素标准品
(2R,3S,4R,5R,8R,10R,11R,12S,13S,14R)-2-ethyl-3,4,10-trihydroxy-3,5,6,8,10,12,14-heptamethyl-15-oxo- 11-{[3,4,6-trideoxy-3-(dimethylamino)-β-D-xylo-]oxy}-1-oxa-6-azacyclopentadec-13-yl 2,6-dideoxy-3-C
布洛芬杂质标准品
N-((2R)-2-hydroxy-2-(3-hydroxyphenyl)ethyl)-N-methyl-2-(4-(2-methylpropyl)phenyl)propanamide
来曲唑杂质
来曲唑杂质A Letrozole EP Impurity A 112809-52-6 来曲唑杂质B Letrozole EP Impurity B 113402-31-6 来曲唑杂质C Letrozole Impurity