Cytosine

C₄H₅N₃O

IUPAC: 4-Aminopyrimidin-2(1H)-one

CAS: 71-30-7

Übersicht

Cytosine is a pyrimidine nucleobase that pairs with guanine in both DNA and RNA through three hydrogen bonds. In DNA, cytosine can be methylated (5-methylcytosine), which plays a key role in epigenetic gene regulation without changing the DNA sequence.

Zusammensetzung

Element Symbol Atome Atommasse
Hydrogen H 5 1,0080
Carbon C 4 12,0110
Nitrogen N 3 14,0070
Oxygen O 1 15,9990

Elementare Zusammensetzung

H
Hydrogen ×5
4,5%
C
Carbon ×4
43,2%
N
Nitrogen ×3
37,8%
O
Oxygen ×1
14,4%

Verwendung

  • • DNA/RNA base pair component
  • • Epigenetics research (methylation)
  • • Molecular biology
  • • Genetic analysis

Wissenswertes

  • ✦ Cytosine methylation is a key mechanism of epigenetics, allowing gene expression changes without DNA sequence changes

Sicherheit

  • ⚠ Low toxicity

Structure

SMILES

C1=C(NC(=O)N=C1)N

Eigenschaften

Typ
organic
Zustand
solid
Molmasse
111,10 g/mol
Dichte
1,5500 g/cm³
Schmelzpunkt
320,0 °C
Löslichkeit
7.69 g/L at 25°C

Molecular Descriptors

Exact Mass
111,0433
XLogP
-1,7
TPSA
67,5 Ų
H-Bond Donors
2
H-Bond Acceptors
2
Rotatable Bonds
0
Heavy Atoms
8
Complexity
170,0

Auch bekannt als

Cytosine

Verwandte Verbindungen

Caffeine

C₈H₁₀N₄O₂

Coumarin

C₉H₆O₂

Acetone

(CH₃)₂CO

Acrylic Acid

C₃H₄O₂

Cysteine

C₃H₇NO₂S

DDT

C₁₄H₉Cl₅

Alanine

C₃H₇NO₂

Diazepam

C₁₆H₁₃ClN₂O

Dichloromethane

CH₂Cl₂

Butane

C₄H₁₀

Frequently Asked Questions

What is Cytosine?
Cytosine (C₄H₅N₃O) is a organic compound with the IUPAC name 4-Aminopyrimidin-2(1H)-one.
What is the molecular weight of Cytosine?
Cytosine has a molar mass of 111.102 g/mol.
What state is Cytosine at room temperature?
Cytosine is a solid at room temperature.
Is Cytosine organic or inorganic?
Cytosine is classified as an organic compound.
What elements make up Cytosine?
Cytosine (C₄H₅N₃O) is composed of Hydrogen (H), Carbon (C), Nitrogen (N), Oxygen (O).