Oxytetracycline hydrochloride CAS NO.2058-46-0

Based on Standards items BP2005 USP30 EP6.0 Appearance Yellow crystalline powder -- Yellow crystalline powder Identification ATLC As required -- As required BSulfuric acid reaction As requir…

Based on Standards items BP2005 USP30 EP6.0 Appearance Yellow crystalline powder -- Yellow crystalline powder Identification ATLC As required -- As required BSulfuric acid reaction As required As required As required CNitric acid reaction As required -- As required crystalline -- As required -- pH 4.5-7.5 4.5-7.0 4.5-7.5 Specific optical rotation -203° - -216° -- -203° - -216° UV absorption at 353nm 290-310 96.0%-104.0% 290-310 UV absorption of impurity 430nm ≤0.25 -- ≤0.25 490nm ≤0.20 -- ≤0.20 Related substances 4-epoxytetracycline ≤0.5% -- ≤0.5% Tetracycline hydrochloride ≤2.0% -- ≤2.0% Main peak tailing ≤2.0% -- ≤2.0% Other ≤0.1% -- ≤0.1% Heavy metal ≤50ppm -- ≤50ppm Water content 6.0%-9.0% 6.0%-9.0% 6.0%-9.0% Ash ≤0.5% -- ≤0.5% Assay 95.0%-100.5% ≤832ug/mg 95.0%-102.0%