Nitrogenous compounds (bases) that occur in nucleic acids: cytosine, thymidine, and uracil.
A heterocyclic organic compound containing nitrogen atoms at (ring) positions 1 and 3. Naturally occurring derivatives are components of nucleic acids and coenzymes, uracil, thymine, and cytosine.
The parent substance of several nitrogenous compounds found in nucleic acid, e.g., thymine, uracil, and cytosine.
A strong smelling nitrogenous based compound with a six-sided ring structure that is the parent compound of several biologically important substances.
A derivative of pyrimidine, especially any of the bases cytosine, thymine, and uracil which are found in RNA and DNA.
A group of nitrogenous bases needed for DNA and RNA structures; includes cytosine, thymine, and uracil.
Any of several nitrogen-containing compounds, including cytosine, thymine, and uracil, important in the structures of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
A nitrogen-containing compound with a ring molecular structure. The commonest pyrimidines are cytosine, thymine, and uracil, which form the nucleotides of nucleic acids.
The parent of a group of heterocyclic nitrogen compounds, C4H4N2. Cytosine and thymine are found in DNA; cytosine and uracil, in RNA.