1,2,3,5-Tetra-O-acetyl β-D-Ribofuranose-13C5 is an intermediate used in the synthesis of Ribavirin-13C5 (R414477), which is a labeled Rivavirin. Purine nucleoside analog; inhibits inosine monophosphate dehydrogenase (IMPDH). Used as an antiviral agent.This compound is suitable for pyruvate dehydrogenase (PDH) related research.