5,5-diethyl-2,6-dithioxo-tetrahydro-pyrimidin-4-one

5,5-diethyl-1,3-diazinane-2,4,6-trithione

N-(carbamoylcarbamoyl)-2-ethylbutanamide

N-(2-ethylbutanoylcarbamoyl)piperidine-1-carboxamide

N-异丙基巴比妥