Pyrimidines_and_derivatives

Concept: Pyrimidines CUI: C0034289 Semantic Type: Organic Chemical 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. (MeSH) 6-membered aromatic ring structure with 2 meta nitrogen heteroatoms. (CRISP Thesaurus) One of two classes of heterocyclic nitrogenous bases found in the nucleic acids DNA and RNA: in DNA the pyrimidines are cytosine and thymine, in RNA uracil replaces thymine. (NCI Thesaurus) [Synonyms: pyrimidine bases]

http://www.owl-ontologies.com/assert.owl#Pyrimidines_and_derivatives

Concept: Pyrimidines CUI: C0034289 Semantic Type: Organic Chemical 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. (MeSH) 6-membered aromatic ring structure with 2 meta nitrogen heteroatoms. (CRISP Thesaurus) One of two classes of heterocyclic nitrogenous bases found in the nucleic acids DNA and RNA: in DNA the pyrimidines are cytosine and thymine, in RNA uracil replaces thymine. (NCI Thesaurus) [Synonyms: pyrimidine bases]

Pyrimidines_and_derivatives

Pyrimidines_and_derivatives

http://www.owl-ontologies.com/assert.owl#Nucleic_acid_nucleoside_or_nucleotide