on the basis of their predominant ionic form at blood ph , these groups are considered in three main classes : ( a ) feebly ionized ( neutral aromatic arsenicals ) , ( b ) ionized as cations ( melaminyl arsenicals and antimonials , acridine derivatives , diguanidines and diamidines , 6-aminoquinoline and 6-aminocinnoline derivatives , phenanthridinium derivatives , triphenylmethane dyes ) , and ( c ) ionized as anions ( carboxylated aromatic arsenicals and sulphonated naphthylamine derivatives ) .
C0022023
ionic
C0007447
cations