Thymine

Thymine
Names
	IUPAC name 5-Methylpyrimidine-2,4(1H,3H)-dione
	Ither names 5-methyluracil
Identifiers
CAS Nummer	65-71-4 ;
3D model (JSmol)	Interactive eemage;
ChEBI	CHEBI:17821 ;
ChEMBL	ChEMBL993 ;
ChemSpider	1103 ;
ECHA InfoCard	100.000.560
MeSH	Thymine
PubChem CID	1135;
UNII	QR26YLT7LT ;
	InChI InChI=1S/C5H6N2O2/c1-3-2-6-5(9)7-4(3)8/h2H,1H3,(H2,6,7,8,9) Key: RWQNBRDOKXIBIV-UHFFFAOYSA-N ; InChI=1/C5H6N2O2/c1-3-2-6-5(9)7-4(3)8/h2H,1H3,(H2,6,7,8,9) Key: RWQNBRDOKXIBIV-UHFFFAOYAL;
	SMILES Cc1c[nH]c(=O)[nH]c1=O;
Properties
Chemical formula	C5H6N2O2
Molar mass	126.12 g·mol−1
Density	1.23 g cm−3 (calculatit)
Meltin pynt	316 °C (601 °F; 589 K)
Bylin pynt	335 °C (635 °F; 608 K)
Acidity (pKa)	9.7
	Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
	verify (whit is ?)
	Infobox references

Thymine /ˈθaɪmᵻn/ (T, Thy) is ane o the fower nucleobases in the nucleic acid o DNA that are representit bi the letters G–C–A–T.

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