化工中间体企业黄页

cis-***-[2-(2,4-二***)-2-(1H-1,2,4-三***-1-基***)-1,3-二***-4-基]***

5-******-2-***

9,9-双(******)芴

1-***-1,4-二氢-5H-***并[4,3-d]***-5,7(6H)二***

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