6-氯-9-乙基-9H-嘌呤

6-氯-N4-乙基-4,5-嘧啶二胺

9-乙基腺嘌呤

9-ethyl-6-[(1-methyl-4-nitro-5-imidazolyl)thio]purine

硫唑嘌呤