the media tested were : sodium diatrizoate and megulumine diatrizoate ( e.r . squibb and sons , renogragin-60 and renografin-76 ) , megulumine diatrizoate ( e. r. squibb and sons , renografin-m-60 ) , sodium iothalamate and megulumine iothalamate ( mallinckrodt chemical works , vascoray ) , sodium iothalamate ( mallinckrodt chemical works , conray 400 ) , meglumine iothalamate ( mallinckrodt chemical works , conray 60 ) , and sodium diatrizoate ( winthrop laboratories , hypaque sodium 50 % ) .
C0022032
iothalamate
C0022033
meglumine iothalamate