2(1H)-Quinazolinone, 4-(3-hydroxyphenyl)-7-methyl-1-(1-methylethyl)- 3-Hydroxyproquazone 4-(3-Hydroxyphenyl)-7-methyl-1-(1-methylethyl)-2(1H)-quinazolinone 65765-07-3 Compound 50-892 meta-Hydroxyproquazone