9-(2-Hydroxypropyl)adenine is the unlabeled form of 9-(2-Hydroxypropyl)adenine-13C5 (H952012), which is an intermediate used in the synthesis of rac Tenofovir-13C5 (>90%) (T018501), the isotope labelled analog of Tenofovir (T018500); an acyclic phosphonate nucleotide analogue and reverse transcriptase inhibitor. Also used as an anti-HIV agent and antiviral.