A heterocyclic aromatic compound containing nitrogen found in nucleic acids. See purine.

A nitrogen compound with a single ring-shaped structure; examples include cytosine, thymine, and uracil, nitrogenous bases that are common in nucleic acids.

One of the types of chemicals that make up the nucleotides that form DNA and RNA. They include thymine, cytosine and uracil

(peer im´ a deen) • A type of nitrogenous base. The pyrimidines cytosine, thymine, and uracil are found in nucleic acids.

A nitrogenous base with a six-member carbon ring. Examples: cytosine, uracil, and thymine are pyrimidines.

any of several basic compounds derived from pyrimidine

a heterocyclic organic compound with a penetrating odor

a nitrogen base with just one ring consisting of carbon and nitrogen

Thymine and cytosine are pyrimidine bases.

pie-RIM-eh-deen A type of organic molecule with a single ring structure, including the nitrogenous bases cytosine, thymine, and uracil. 313

a nitrogenous base in RNA and DNA. Cytosine is a pyrimidine in RNA and DNA; thymine is a pyrimidine in DNA; uracil is a pyrimidine in RNA.

One of the groups of nitrogenous bases that are part of a nucleotide. Pyrimidines are single ringed, and consist of the bases thymine (in DNA), uracil (replacing thymine in RNA), and cytosine. PICTURE

A nitrogen containing, single ring compound that occurs in nucleic acids. In DNA molecules, the pyrimidines are cytosine and thymine.

thymine and cytosine are both pyrimidines. It is a smaller structure than purines.

A nitrogen-containing, single-ring, basic compound that occurs in nucleic acids. The pyrimidines in DNA are cytosine and thymine; in RNA, cytosine and uracil.

A nitrogen containing ring compound that is found in DNA and RNA. Examples of pyrimidines are thymine, cytosine, and uracil.

A nitrogen-containing, double-ring, basic compound that occurs in nucleotides of DNA and RNA. The pyrimidines in DNA are cytosine and thymine. Those in RNA, are cytosine and uracil. Back to Homepage

Pyrimidine is a heterocyclic aromatic organic compound similar to benzene and pyridine, containing two nitrogen atoms at positions 1 and 3 of the six-member ring Heterocyclic Chemistry (3rd Edition) Thomas. L. Gilchrist ISBN 0-582-27843-0 . It is isomeric with two other forms of diazine.