9-Carboxymethoxymethylguanine-13C2,15N
9-Carboxymethoxymethylguanine-13C2,15N is the 13C- and 15N-labeled 9-Carboxymethoxymethylguanine (HY-137181). 9-Carboxymethoxymethylguanine is the main metabolite of Aciclovir. Acyclovir (Aciclovir) is a guanosine analogue and an orally active antiviral agent.