2’-Monodehydroxy-2’-chloro Ganciclovir-d5-N-acetylmono-O-p-methoxybenzoate is the labeled analogue of 2’-Monodehydroxy-2’-chloro Ganciclovir-N-acetylmono-O-p-methoxybenzoate (M526805), an analogue of Ganciclovir (G235000), a nucleoside analog structurally related to Acyclovir (A192400). Ganciclovir is an antiviral medicine.