681249-55-8
N'-(1,4-dihydropyrazin-2-yl)-2,2,2-trifluoro-N-oxoethanimidamide
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681249-56-9
2-(三氟甲基)-[1,2,4]噻唑并[1,5-A]吡嗪
681249-57-0
2-(三氟甲基)-5,6,7,8-四氢-[1,2,4]三唑并[1,5-a]吡嗪