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frwang1983鐵蟲 (小有名氣)
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[求助]
藥典雜質(zhì)問題
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| 英國藥典的原料藥標(biāo)準(zhǔn),后附的impurities中的其中一個用有關(guān)物質(zhì)檢測方法與主峰分不開是怎么回事? |
鐵蟲 (小有名氣)
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Use a stainless steel column (20 cm × 4.6 mm) packed with end-capped octadecylsilyl silica gel for chromatography (5 µm) (Hypersil ODS is suitable). Use a flow rate of 2 mL per minute 48 volumes of methanol and 52 volumes of a phosphate buffer prepared by dissolving 4.91 g of sodium dihydrogen orthophosphate and 0.633 g of disodium hydrogen orthophosphate in sufficient water to produce 1000 mL. 完全按這個做的 |
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