((3-Acetamido-2,4,6-triiodobenzyl)imino)diacetic acid hydrate (2:1) 19014-74-5 ACETIC ACID, ((3-ACETAMIDO-2,4,6-TRIIODOBENZYL)IMINO)DI-, HYDRATE (2:1) N-(2,4,6-Triiodo-3-acetamidobenzyl)iminodiacetic acid hemihydrate