Thymine

C₅H₆N₂O₂

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

CAS: 65-71-4

Tổng quan

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.

Thành phần

Nguyên tố	Ký hiệu	Nguyên tử	Khối lượng nguyên tử
Hydrogen	H	6	1,0080
Carbon	C	5	12,0110
Nitrogen	N	2	14,0070
Oxygen	O	2	15,9990

Thành phần nguyên tố

Hydrogen ×6

4,8%

Carbon ×5

47,6%

Nitrogen ×2

22,2%

Oxygen ×2

25,4%

Công dụng

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

Sự thật thú vị

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

An toàn

⚠ Low toxicity

Structure

SMILES

CC1=CNC(=O)NC1=O

Tính chất

Loại: organic
Trạng thái: solid
Khối lượng mol: 126,12 g/mol
Mật độ: 1,2230 g/cm³
Điểm nóng chảy: 316,0 °C
Điểm sôi: 335,0 °C
Độ hòa tan: 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

Còn được gọi là

5-Methyluracil

Hợp chất liên quan

Caffeine

C₈H₁₀N₄O₂

Acrylic Acid

C₃H₄O₂

Alanine

C₃H₇NO₂

Dichloromethane

CH₂Cl₂

Asparagine

C₄H₈N₂O₃

Bisphenol A Diglycidyl Ether

C₂₁H₂₄O₄

Dimethyl Carbonate

C₃H₆O₃

Dopamine

C₈H₁₁NO₂

Bromothymol Blue

C₂₇H₂₈Br₂O₅S

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).