Thymine

C₅H₆N₂O₂

IUPAC: 5-Methylpyrimidine-2,4(1H,3H)-dione

CAS: 65-71-4

Aperçu

Thymine is a pyrimidine nucleobase found exclusively in DNA, where it pairs with adenine through two hydrogen bonds. It is distinguished from uracil (found in RNA) by having a methyl group at the 5 position. This methylation helps DNA repair enzymes distinguish DNA from RNA.

Composition

Élément	Symbole	Atomes	Masse atomique
Hydrogen	H	6	1,0080
Carbon	C	5	12,0110
Nitrogen	N	2	14,0070
Oxygen	O	2	15,9990

Composition élémentaire

Hydrogen ×6

4,8%

Carbon ×5

47,6%

Nitrogen ×2

22,2%

Oxygen ×2

25,4%

Usages

• DNA component
• Genetic research
• Molecular biology
• UV mutation studies

Le saviez-vous

✦ UV light can cause adjacent thymine bases to fuse into thymine dimers, a primary cause of skin cancer

Sécurité

⚠ Low toxicity

Structure

SMILES

CC1=CNC(=O)NC1=O

Propriétés

Type: organic
État: solid
Masse molaire: 126,12 g/mol
Densité: 1,2230 g/cm³
Point de fusion: 316,0 °C
Point d'ébullition: 335,0 °C
Solubilité: 4.0 g/L at 25°C

Molecular Descriptors

Exact Mass: 126,0429
XLogP: -0,6
TPSA: 58,2 Å²
H-Bond Donors: 2
H-Bond Acceptors: 2
Rotatable Bonds: 0
Heavy Atoms: 9
Complexity: 195,0

Aussi connu sous le nom de

5-Methyluracil

Composés associés

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 Thymine?

Thymine (C₅H₆N₂O₂) is a organic compound with the IUPAC name 5-Methylpyrimidine-2,4(1H,3H)-dione.

What is the molecular weight of Thymine?

Thymine has a molar mass of 126.115 g/mol.

What state is Thymine at room temperature?

Thymine is a solid at room temperature.

Is Thymine organic or inorganic?

Thymine is classified as an organic compound.

What elements make up Thymine?

Thymine (C₅H₆N₂O₂) is composed of Hydrogen (H), Carbon (C), Nitrogen (N), Oxygen (O).