35729-52-3 4(3H)-Quinazolinone, 7-butoxy-3-(4-(diethylamino)butyl)-, oxalate (1:2) 7-Butoxy-3-(4-(diethylamino)butyl)-4(3H)-quinazolinone oxalate (1:2) 7-n-Butoxy-3-(4-diethylaminobutyl)-3,4-dihydro-4-oxoquinazoline dioxalate