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3Â¥: Originally posted by swallow13 at 2013-04-02 21:28:22
lzÄãÊÇÏëÓÃÓÚ¼ø±ð»¹ÊÇʲô£¿Èç¹ûÖ»ÊǼø±ð ¿ÉÒÔ²â±ÈÐý¹â¶È ·ÖÎöµÄ»° ÓÃÊÖÐÔÖùÊÔÊÔ°É

Sorry for figuring out that u just mistake the concepts of D/L and (+)/(-). D/L conformation is not the same as (+)/(-). It is determined by the structure the chemical has, while (+)/(-) is tested by polarimeter. The materials with D conformation can be either (+)/(-), so u can get to know the optical rotation of a sample by polarimeter, but can't draw a conclusion that it is of D or L conformation.
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