Pyrimidinones. Pyrimidones . Heterocyclic compounds known as 2-pyrimidones (or 2-hydroxypyrimidines) and 4-pyrimidones (or 4-hydroxypyrimidines) with the general formula C4H4N2O. . 1.00
Pyrimidines. 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. . 0.51
Pteridines. Pteridinones . Pyrazinopyrimidines . Compounds based on pyrazino[2,3-d]pyrimidine which is a pyrimidine fused to a pyrazine, containing four NITROGEN atoms. . 0.40
Hydroxyproline. 4-Hydroxyproline . cis-4-Hydroxyproline . 4 Hydroxyproline . cis 4 Hydroxyproline . Oxyproline . A hydroxylated form of the imino acid proline. A deficiency in ASCORBIC ACID can result in impaired hydroxyproline formation. . 0.40
3-Deazauridine. 4-Hydroxy-1-(beta-D-Ribopentofuranosyl)-2-Pyridone . 3 Deazauridine . 4-Hydroxy-1-(beta-D-ribofuranosyl)-2-pyridinone. Analog of uridine lacking a ring-nitrogen in the 3-position. Functions as an antineoplastic agent. . 0.39