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US4247704A Hexahydro thieno imadazole intermediates for the synthesis of biotin 失效
六氢噻吩并咪唑中间体用于合成生物素

Hexahydro thieno imadazole intermediates for the synthesis of biotin
摘要:
A process is disclosed for producing d-biotin from L or DL-cystine ester via novel intermediates.
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