Thymine Thymine Walter Ulbricht Category="Pyrimidines"

Thymine
Chemical name5-Methylpyrimidine-2,4(1H,3H)-dione
Chemical formulaC5H6N2O2
Molecular mass126.11 g/mol
Melting point316 - 317 °C
CAS number65-71-4
SMILESCC1=CNC(NC1=O)=O
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For the similarly-spelled vitamin compound, see Thiamine

Thymine, also known as 5-methyluracil, is a Pyrimidine Nucleobase. It is found in the Nucleic acid DNA. In RNA thymine is replaced with Uracil in most cases. Thymine can Base pair with Adenine.

Thymine combined with Deoxyribose creates the Nucleoside deoxythymidine, which is synonymous with the term Thymidine. Thymidine can be phosphorylated with one, two or three phosphoric acid groups, creating respectively TMP, TDP or TTP (thymidine mono- di- or triphosphate).

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Nucleic acids
Nucleobases: Adenine - Thymine - Uracil - Guanine - Cytosine - Purine - Pyrimidine
Nucleosides: Adenosine - 5-methyluridine - Uridine - Guanosine - Cytidine - Deoxyadenosine - Thymidine - Deoxyuridine - Deoxyguanosine - Deoxycytidine - Ribose - Deoxyribose
Nucleotides: AMP - UMP - GMP - CMP - ADP - UDP - GDP - CDP - ATP - UTP - GTP - CTP - cAMP - cGMP
Deoxynucleotides: dAMP - dTMP - dUMP - dGMP - dCMP - dADP - dTDP - dUDP - dGDP - dCDP - dATP - dTTP - dUTP - dGTP - dCTP
Nucleic acids: DNA - RNA - LNA - PNA - mRNA - ncRNA - miRNA - rRNA - shRNA - siRNA - tRNA - mtDNA - Oligonucleotide