Thymidine monophosphate (TMP), also known as thymidylic acid (conjugate basethymidylate), deoxythymidine monophosphate (dTMP), or deoxythymidylic acid (conjugate basedeoxythymidylate), is a nucleotide that is used as a monomer in DNA. It is an ester of phosphoric acid with the nucleosidethymidine. dTMP consists of a phosphategroup, the pentosesugardeoxyribose, and the nucleobasethymine. Unlike the other deoxyribonucleotides, thymidine monophosphate often does not contain the "deoxy" prefix in its name; nevertheless, its symbol often includes a "d" ("dTMP").[1]Dorland’s Illustrated Medical Dictionary[2] provides an explanation of the nomenclature variation at its entry for thymidine.
As a substituent, it is called by the prefix thymidylyl-.