4-Ethyl-3-isopropyl-1H-1,2,4-triazol-5(4H)-one

4-ethyl-5-isopropyl-2H-1,2,4-triazol-3(4H)-one

3H-1,2,4-Triazol-3-one,4-ethyl-2,4-dihydro-5-(1-methylethyl)-(9CI)