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phosphoramidate

n. (misspelling of phosphoramidite English)

Wikipedia
Phosphoramidate

A phosphoramidate is a phosphate that has an NR instead of an OH group. The structure of phosphoramidic acid (phosphoramidate), (HO)PONH, is present in PubChem.
A phosphorodiamidate is a phosphate that has two of its OH groups substituted by NR groups.