化工中间体企业黄页

均***四***二酐CAS号:89-32-7

1-***-(3-二*********)碳***二******

N-(3-(4H-1,2,4-triazol-4-yl)phenyl)acetamide

2-溴-3-***异烟******

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