after single doses the highly protein-bound drugs ( oxacillin , cloxacillin , dicloxacillin , and nafcillin ) had lower percentages of penetration ( ratio of peak in ascitic fluid to that in serum , multipled by 100 ) than did methicillin , ampicillin , and penicillin g , which have a lower degree of protein binding .
C0009077
cloxacillin
C0012093
dicloxacillin