Pyrimidine

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Pyrimidine

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Chemical namePyrimidine

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Chemical formulaC4H4N2

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Molecular mass80.09 g/mol

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Density1.016 g/ml

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Melting point20 - 22 °C

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Boiling point123 - 124 °C

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CAS number289-95-2

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SMILESC1=NC=NC=C1

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Pyrimidine is a heterocyclic aromatic organic compound, which is similar to benzene and pyridine and that contains two nitrogen atoms at positions 1 and 3 of the six-membered ring.

Related Topics:
Heterocyclic - Aromatic - Organic compound - Benzene - Pyridine - Nitrogen - Atoms

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Three nucleobases found in nucleic acids, namely cytosine, thymine, and

Related Topics:
Nucleobase - Nucleic acid - Cytosine - Thymine

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uracil, are pyrimidine derivatives. In DNA and RNA, these bases form

Related Topics:
Uracil - DNA - RNA

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hydrogen bonds with their complementary purines.

Related Topics:
Hydrogen bond - Complementary - Purine

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purine pyrimidine

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A T

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G C

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In RNA, the complement of A is U instead of T:

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purine pyrimidine

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A U

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G C

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These hydrogen bonding modes are for classical Watson-Crick base pairing. Other hydrogen bonding modes are available in both DNA and RNA, although the additional 2'-hydroxyl group of RNA expands the configurations through which RNA can form hydrogen bonds.

Related Topics:
Watson-Crick base pair - DNA - RNA

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