2-Deoxycytidine hydrochloride is the hydrochloride form of 2-Deoxycytidine, an important deoxyribonucleoside analog commonly used in DNA synthesis and potentially anticancer, and its derivative Gemcitabine has been developed as an anticancer drug.2-Deoxycytidine 2-Deoxycytidine hydrochloride protects mice from the lethal toxicity of cytosine arabinoside(araC).