Thymidine triphosphate (TTP), also called deoxythymidine triphosphate (dTTP),^[1] is one of the four nucleoside triphosphates that are used in the in vivo synthesis of DNA. Unlike the other deoxyribonucleoside triphosphates, thymidine triphosphate does not always contain the "deoxy" prefix in its name.^[2] The corresponding ribonucleoside triphosphate is called uridine triphosphate.

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Thymidine triphosphate

Names
IUPAC name Thymidine 5′-(tetrahydrogen triphosphate)
Systematic IUPAC name O1-{[(2R,3S,5R)-5-(2,4-Dioxo-5-methyl-3,4-dihydropyrimidin-1(2H)-yl)-3-hydroxyoxolan-2-yl]methyl} tetrahydrogen triphosphate
Other names dTTP, 2′-Deoxythymidine triphosphate
Identifiers
CAS Number	365-08-2 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:18077
ChEMBL	ChEMBL363559 N
ChemSpider	58493 N=
ECHA InfoCard	100.006.064
IUPHAR/BPS	5505
MeSH	thymidine+5'-triphosphate
PubChem CID	64968
UNII	QOP4K539MU Y
CompTox Dashboard (EPA)	DTXSID30189998
SMILES CC1=CN(C(=O)NC1=O)C2CC(C(O2)COP(=O)(O)OP(=O)(O)OP(=O)(O)O)O
Properties
Chemical formula	C10H17N2O14P3
Molar mass	482.168
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N (what is YN ?) Infobox references

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It can be used by DNA ligase to create overlapping "sticky ends" so that protruding ends of opened microbial plasmids may be closed up.