Wiktionary
decitabine
n. 5-aza-2'-deoxycytidine, a cytosine analogue that hypomethylates DNA by inhibiting DNA methyltransferase.
Wikipedia
Decitabine
Decitabine (trade name Dacogen), or 5-aza-2'-deoxycytidine, is a drug for the treatment of myelodysplastic syndromes, a class of conditions where certain blood cells are dysfunctional, and for acute myeloid leukemia (AML). Chemically, it is a cytidine analog.