N,N'-diisobutylacetamidine

O-ethyl N-(2-methylpropyl)carbamothioate

5,5-dimethyl-3-(2-methylpropylamino)cyclohex-2-en-1-one

6-Ethyl-4-isobutylimino-5-hydroxy-2,2-dimethyl-3,4-dihydro-2H-thiopyrano[2,3-b]pyridin-5,7-diol

2,4-dicyano-3-isobutyl-3-methylglutarimide