Synonyms: d4C-MeP;Cytidine, 2',3'-didehydro-2',3'-dideoxy-, 5'-(hydrogen methylphosphonate);140132-55-4;AC1L9RR1;D4C 5'-OPO2H2(Me);2',3'-Didehydro-2',3'-dideoxycytidine 5'-methylphosphonate, ammonium salt;[(2S,5R)-5-(4-amino-2-oxopyrimidin-1-yl)-2,5-dihydrofuran-2-yl]methoxy-methylphosphinic acid