primary alcohol oxacycle monothioacetal nucleoside analogue lamivudine http://purl.bioontology.org/ontology/MESH/D019259 http://purl.bioontology.org/ontology/RXNORM/68244 http://purl.bioontology.org/ontology/SNOMEDCT/386897000 http://purl.obolibrary.org/obo/CHEBI_63577 http://purl.obolibrary.org/obo/HIV_5673 http://purl.obolibrary.org/obo/NCIT_C1471 https://en.wikipedia.org/wiki/Lamivudine https://www.wikidata.org/wiki/Q422631 A monothioacetal that consists of cytosine having a (2R,5S)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl moiety attached at position 1. An inhibitor of HIV-1 reverse transcriptase, it is used as an antiviral in the treatment of AIDS and hepatitis B. J05AF05 3TC