14855-77-7 Benzoic acid, 3,5-bis(acetylamino)-2,4,6-triiodo-, labeled with iodine-131, monosodium salt Benzoic acid, 3,5-diacetamido-2,4,6-triiodo-, monosodium salt, labeled with iodine-131 Diatrizoate sodium I 131 Diatrizoate sodium I 131 [USAN] Hypaque-I131 I131 Hypaque Sodium 3,5-diacetylamino-2,4,6-triiodobenzoate-I131