butalbital5-(2-methylpropyl)-5-prop-2-enyl-1,3-diazinane-2,4,6-trione5-Allyl-5-isobutyl-pyrimidine-2,4,6-trione5-allyl-5-(2'-methyl-n-propyl) barbituric acid5-allyl-5-(2-methylpropyl)barbituric acid5-allyl-5-isobutyl-2,4,6(1H,3H,5H)-pyrimidinetrione5-allyl-5-isobutylbarbituric acid5-isobutyl-5-allylbarbituric acidallylbarbitalallylbarbitoneallylbarbituric acidbutalbarbitaliso-butylallylbarbituric aciditobarbitaltetrallobarbital