1-((3-(Iodo-131I)-2,4-dimethoxybenzoyl)oxy)-2,5-pyrrolidinedione 130168-14-8 2,5-Pyrrolidinedione, 1-((3-(iodo-131I)-2,4-dimethoxybenzoyl)oxy)- N-Succinimidyl-2,4-dimethoxy-3-iodobenzoate SDMIB