Deoxycytidine diphosphate

Deoxycytidine diphosphate is a derivative of the common nucleic acid CTP, or cytidine triphosphate, in which the -OH (hydroxyl) group on the 2' carbon on the nucleotide's pentose has been removed (hence the deoxy- part of the name). Additionally, the diphosphate of the name indicates that one of the phosphoryl groups of CTP has been removed, most likely by hydrolysis.

Deoxyguanosine diphosphate would be abbreviated dCDP.