Valcyte® contains valganciclovir hydrochloride (PubChem CID 110632
). This is a prodrug of ganciclovir (PubChem CID 3454
). The INN document for this drug specifies that there is a chiral centre at (position t8) and the INN-assigned compound consists of two epimers depending on the stereochemistry at this position. The structure shown here does not specify stereochemistry at this point and represents the mixture. This is represented by the '?' in the InChI standard identifier on the 'Structure' tab.
View more information in the IUPHAR Pharmacology Education Project: valganciclovir