1,1-dimethyl-3-(1,2,3,4-tetrahydro-4-oxo-1-naphthyl)-2-thiourea

1-ethyl-3-(4-oxo-2,3-dihydro-1H-naphthalen-1-yl)thiourea

2-N-ethyl-4-N-methyl-1,3,5-triazine-2,4,6-triamine

N-ethyl-5-nitropyridine-3-sulfonamide

N-ethyl-6-(ethylamino)-5-nitropyridine-3-sulfonamide