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

ethyl 3-cyano-2-hydroxyazulene-1-carboxylate

methyl 2-chloroazulene-1-carboxylate

2-azulen-2-ylacetonitrile