Cytosine

CAS Registry Number®

71-30-7

CAS Name

Cytosine

Molecular Formula

C4H5N3O

Molecular Mass

111.10

Cite this Page

Cytosine.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=71-30-7 (retrieved 2024-11-21) (CAS RN: 71-30-7).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    322.5 °C (decomp)

  • Density (2)

    1.391 g/cm³ @ Temp: Room temp

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C4H5N3O/c5-3-1-2-6-4(8)7-3/h1-2H,(H3,5,6,7,8)

InChIKey

InChIKey=OPTASPLRGRRNAP-UHFFFAOYSA-N

SMILES

NC=1NC(=O)N=CC1

Canonical SMILES

O=C1N=CC=C(N)N1

Other Names for this Substance

  • 2(1H)-Pyrimidinone, 6-amino-
  • 2(1H)-Pyrimidinone, 4-amino-
  • Cytosine
  • 6-Amino-2(1H)-pyrimidinone
  • 4-Amino-2-hydroxypyrimidine

View All

Deleted or Replaced CAS Registry Numbers

504-05-2, 14987-28-1, 26661-23-4, 66322-75-6, 66398-98-9, 66460-16-0, 66460-17-1, 80275-67-8, 88733-25-9, 118511-36-7, 149297-78-9, 918399-36-7, 1268833-99-3

CAS INSIGHTSTM
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