化工中间体企业黄页

2,2-二***-***二***-4-***

4-溴-5-***-2-******

*** 1-(***)******

tert-butyl 4-cyano-4-fluoropiperidine-1-carboxylate

6,6-二***-4,5,6,7-四氢-2H-吲***-3- ******