对称二异丙基脲

2-O-(tert-butyldimethylsilyl)-5-(3,4-dichlorophenyl)-6,7-bis(hydroxymethyl)-2,3-dihydro-1H-pyrrolizine bis(2-propylcarbamate)

tert-butyl N-propan-2-ylcarbamate

3-propan-2-ylimidazolidine-2,4-dione

methyl N'-(propan-2-ylcarbamoyl)carbamimidate