2,3-difluoro-2,3-bis(trifluoromethyl)oxirane

1,2-苯二胺

三氟乙酸

2,2,2-trifluoro-N-(2-nitrophenyl)acetamide

2,5-dichloro-1,1,1,6,6,6-hexafluoro-3,4-diaza-hexa-2,4-diene