2,3,5,6,7,8-六氢-1H-环戊并[b]喹啉-9-胺

1-乙酰氨基-2-氰基-1-环戊烯

1,3,6-己烷三腈

2-氰基环戊酮

5,6-dihydro-4H-cyclopenta[c][1,2]oxazol-3-amine