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Cytosine /ˈstsn/ (C) is ane o the fower main bases foond in DNA an RNA, alang wi adenine, guanine, an thymine (uracil in RNA).

Cytosine
Cytosine chemical structure.png
Cytosine-3D-balls.png
Cytosine-3D-vdW.png
Names
IUPAC name
4-aminopyrimidin-2(1H)-one
Ither names
4-amino-1H-pyrimidine-2-one
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.000.681
KEGG
MeSH Cytosine
UNII
Properties
C4H5N3O
Molar mass 111.10 g/mol
Density 1.55 g/cm3 (calculatit)
Meltin pynt 320 °C (608 °F; 593 K)
Acidity (pKa) 4.45 (seicontary), 12.2 (primary)[1]
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
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Infobox references

ReferencesEedit

  1. Dawson, R.M.C.; et al. (1959). Data for Biochemical Research. Oxford: Clarendon Press.