18741-24-7 2,3-Dihydro-3-phenyl-2-thioxoquinazolin-4(1H)-one 2-Thio-3-phenyl-1,3-dihydroquinazolin-4-one EINECS 242-550-6 Quinazolin-4-one, 1,3-dihydro-3-phenyl-2-thio-