acyclovir [ 9- ( 2-hydroxyethoxymethyl ) guanine ] , a clinically useful anti-herpesvirus agent , was a weak inhibitor ( ki = 190 microm ) of hypoxanthine-guanine phosphoribosyltransferase ( hgprtase ) from human erythrocytes .
C0001367
acyclovir
C0018321
guanine