Ethyl cartrizoate

(2-ethoxy-2-oxoethyl) 3,5-diacetamido-2,4,6-triiodobenzoate

(2-ethoxy-2-oxo-ethyl) 3,5-diacetamido-2,4,6-triiodo-benzoate

3,5-diacetamido-2,4,6-triiodo-benzoic acid (2-ethoxy-2-keto-ethyl) ester