地氯雷他定中间体 Desloratadine int
1.氯雷他定
Loratadine
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2. 8-氯-6,11-二氢-11-(1-甲基-4-哌啶叉)-5H-苯并[5,6]环庚烷[1,2-b]吡啶(甲基氯雷他定)
8-Chloro-6,11-dihydro-11-(1-methyl-4-piperidinylidene)-5H-benzo[5,6]cyclohepta[1,2-b]pyridine
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