Metrizoic Acid

**Definition:** A diagnostic radiopaque that usually occurs as the sodium salt.

**Tree numbers:** - D02.241.223.100.400.880.530 - D02.455.426.559.389.127.375.880.530

**Synonyms:** - Benzoic acid, 3-(acetylamino)-5-(acetylmethylamino)-2,4,6-triiodo-