2,6-difluoro-2'-nitro-1,1'-biphenyl

苯并[c]苯并吡喃-6-酮

联苯-2,2-二羧酸二甲酯

diethyl 2-[hydroxy-(2-nitrophenyl)methylidene]propanedioate

1-(4-methylphenyl)sulfonyl-2,1-benzoxazol-3-one