The present invention discloses a novel process for the preparation of gadolinium complex of (4S)-4-(4-Ethoxybenzyl)-3,6,9-tris(carboxylatomethyl)-3,6,9-triazaundecanedioic acid disodium of formula 1 and novel intermediates thereof.
本发明公开了一种制备式 1 的(4S)-4-(4-乙氧基苄基)-3,6,9-三(羧基甲基)-3,6,9-三氮杂
十一烷二酸二
钠的
钆络合物及其新型中间体的新工艺。