3-(2-氧代环戊基)丙酸

6-oxoundecanedioic acid

2-(oxomethylidene)cyclopentan-1-one

6-甲基-7-[(3-氧代-2-丁烷基)氧基]-2,3-二氢环戊烯并[c]苯并吡喃-4(1H)-酮

2-氨基-6,7-二氢-5H-环戊[d]嘧啶-4-醇