倍他米松杂质
倍他米松杂质 倍他米松杂质A Betamethasone 17-Propionate CAS No. 5534-13-4 C25H33FO6 M.W. 448.54 倍他米松杂质B 21-Hemiacetal Betametha
苯肾上腺素杂质标准品
(4R)-4,8-dihydroxy-N-methyl-1,2,3,4-tetrahydroisoquinoline hydrochloride monohydrate
扑尔敏杂质标准品
(3RS)-(3-(4-chlorophenyl)-3-(pyridin-2-yl)propyl)dimethylamine-N-oxide maleate