Estradiol valerate (EV, E2V) (INN, USAN, JAN) (brand names Progynova, Progynon Depot, Delestrogen, many others), or oestradiol valerate (BAN), is a synthetic, steroidal estrogen and an estrogen ester – specifically, the 17β-valerate ester of estradiol – which is marketed in the United States, Canada, Europe, and throughout much of the rest of the ...