5-iodo-2'-desoxyuridine ( 2 ; idoxuridine , idu ) , 9-beta-d-arabinofuranosyladenine ( 4 ; vidarabine ara-a ) , 9- ( 2-hydroxyethoxymethyl ) guanine ( 5 ; acyclovir , acv ) and 2'-fluoro-5-iodo-1-beta-d-aracytosine ( 6 ; fiac ) the following order of decreasing activity was found:1 greater than 6 greater than 5 greater than 2 greater than 4 ( against hsv-1 ) and 6 greater than 2 greater than 5 greater than 1 greater than 4 ( against hsv-2 ) .
C0018321
guanine
C0001367
acyclovir