求一原料药欧洲药典标准,急急急?Chromatographic system - a stainless steel column 25 cm x 4.6 mm, packed with octadecysilane bonded to porous silica (5 /lID), - mobile phase: a mixture of40 volumes of 1 per cent w/v solution of ammonium acetate and 60 volumes of acetonitrile, - flow rate. 0.7 ml per minute, - spectrophotometer set at 254 nm, - injection volume. 20 f.Il.查看更多