Synonyms: 3-(4-Methoxyphenyl)-2-thioxo-2,3-dihydro-1H-spiro[benzo[h]quinazoline-5,1'-cyclohexan]-4(6H)-one;Spiro[benzo[h]quinazoline-5(1H),1'-cyclohexan]-4(6H)-one, 2,3-dihydro-3-(4-methoxyphenyl)-2-thioxo-;spiro[benzo[h]quinazoline-5(3H),1'-cyclohexan]-4(6H)-one, 2-mercapto-3-(4-methoxyphenyl)-