2,2-dichloro-N-[1-[(2,2-dichloroacetyl)amino]butyl]acetamide

2-chloro-N-[1-[(2-chloroacetyl)amino]butyl]acetamide

1,3-dimethyl-7-[2-[4-(4-nitrophenyl)piperazin-1-yl]-2-oxoethyl]purine-2,6-dione

N-(4-methylphenyl)sulfonylbutanamide

1-丁基吡咯