Nicotinic Acid Riboside-d4 Methyl Ester Triflate O-Acetate is an intermediate used in the synthesis of Nicotinic Acid Riboside-d4 Methyl Ester Triflate (N429407), which is the labelled analogue of an effective agent for increasing nicotinamide adenine dinucleotide (NAD) concentrations in mammalian cells.