化工中间体企业黄页

均***四***二酐CAS号:89-32-7

4-***并[3,4-d]***

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

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

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