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min1986金蟲 (小有名氣)
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[求助]
有做過還原型谷胱甘肽的同學(xué)嗎,進來看看,謝謝。!
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還原型谷胱甘肽的USP38、JP16標(biāo)準(zhǔn)里,有關(guān)物質(zhì)檢查項下,為什么要在系統(tǒng)適用性溶液中加入抗壞血酸和苯丙氨酸來驗證分離度呢,這兩個成分并非還原型谷胱甘肽相關(guān)的降解雜質(zhì),那么,這兩個化合物和還原型谷胱甘肽有什么直接或間接的聯(lián)系呢?用他們來驗證分離度用意何在?哪位高手能解答一二,在線等,急……謝謝。! 原文在此,僅供參考: System suitability: System performance: Dissolve 50 mg of glutathione, 10mg of D-phenylglycine and 50 mg of ascorbic acid in 100 mL of water. When the procedure is run with 10 mL of this solution under the above operating conditions, ascorbic acid,glutathione and D-phenylglycine are eluted in this order, and the resolutions between the peaks of ascorbic acid and glutathione and between the peaks of glutathione and D-phenylglycine are not less than 5, respectively. |
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