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3Â¥2012-11-22 21:06:26
catwithdog
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vipjhy: ½ð±Ò+2, ¡ï¡ï¡ïºÜÓаïÖú 2012-12-07 07:42:50
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marktiger: ½ð±Ò+1, лл²ÎÓ룬»¶Ó³£À´¡£ 2012-11-22 08:07:14
vipjhy: ½ð±Ò+2, ¡ï¡ï¡ïºÜÓаïÖú 2012-12-07 07:42:50
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For your reference: 1. ¶ÔÓÚÒ»¸ö·ÂÖÆÒ©£¬ÊÇÑ¡ÓÃÖйúÒ©µäµÄ»º³åÒº£¬»¹ÊÇÅ·ÖÞ»òÊÇÈÕ±¾ÃÀ¹úµÄ½éÖÊÅäÖÆÏàÓ¦pHµÄ½éÖʵÄÑ¡ÔñÒÀ¾Ý£¿ You can find this brand drug is from Å·ÖÞ»òÊÇÈÕ±¾, ÃÀ¹ú and search their dissolution method. If this drug is from ÃÀ¹ú and dissolution is pH1.2 and 6.8 (often use), then you can follow USP to prepare your Èܳö½éÖÊ and also use this buffer system to compare your dissolution profile. 2. ±¥ºÍÈܽâ¶È²â¶¨µÄ¾ßÌå×ö·¨£¬¶ÔÕÕµÄÅäÖÃ. 1) Follow your dissolution method, decide yourÈܳö½éÖÊ. 2) Develop your ÔÁÏ assay method (we often use HPLC method). 3) Dissolve yourÔÁÏ in whatever Èܳö½éÖÊyou want to try to small flask to save your ÔÁÏ till can not be dissolved. 4) Stir at room temp for 24 hrs. 5) Take the supernatant, filter and run HPLC. 6) Calculate theÔÁÏconcentration against working standard. |
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2Â¥2012-11-22 03:34:01
laiyin_111
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- ×¢²á: 2010-09-21
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