Cytosine is one of the five main nitrogenous bases used in storing and transporting genetic information within a cell. Cytosine is a pyrimidine base that is found in both DNA and RNA and pairs with guanine. It was isolated from the nucleic acid of calf thymus tissue in 1894. A suggested structure for cytosine, published in 1903, was confirmed in the same year when that base was synthesized in the laboratory.
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Common molecules
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Obtained courtesy of the Cambridge Structural Database
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