brvarau and varau were superior to 9- ( 2-hydroxyethoxymethyl ) guanine ( acyclovir , acv ) and comparable in potency with 2'-fluoro-5-iodoaracytosine ( fiac ) and 2'-fluoro-5-methylarauracil ( fmau ) .
C0018321
guanine
C0001367
acyclovir