Definition: A family of 6-membered heterocyclic compounds occurring in nature in a wide variety of forms. They include several nucleic acid constituents (CYTOSINE; THYMINE; and URACIL) and form the basic structure of the barbiturates.
xymedon [ 1-(beta-hydroxyethyl)-4,6-dimethyl-1,2-dihydro-2-oxopyrimidine,N-(2-hydroxyethyl)-4,6-dimethyl-2-dehydropyrimidone,ximedon,ximedone ] nitrogen-containing heterocyclic compound; Russian patent; antiatherogenic; used for treatment of burns; used on varicose ulcer