KnowraBarbituric acidLinked fromLinked fromThe 2 pages that link to Barbituric acid, each with the reason it gives.All 2Broader topic 1Narrower topic 1Malonic acidBroader topic: Its ring construction illustrates malonic acid's use as a building block for nitrogen-containing compounds.PhenobarbitalNarrower topic: Phenobarbital is a substituted derivative of this parent compound.