(3ar,6ar)-2,5-dihydroxy-3a,6a-dimethyloctahydropentalene-2,5-dicarbonitrile

1,5-Dimethylbicyclo<3.3.0>octa-2,7-dien-2,7-dicarbonitril

(3aS,6aS)-3a,6a-dimethyl-3,6-dihydropentalene-1,4-dicarbonitrile

1,5-Dimethylbicyclo<3.3.0>octa-2,6-dien-2,7-dicarbonitril

4-(氰基甲基)-2-甲基-1H-咪唑-5-羧酸