3-(3-methylbutanoyl)cyclohepta[b]furan-2-one

2-氨基-2,4,6-环庚三烯-1-酮

2-氯-2,4,6-环庚三烯-1-酮

diethyl 2-aminoazulene-1,3-dicarboxylate

2-氨基-1,3-二氰基薁; 2-氨基-1,3-二氰基甘菊环