The invention relates to a composition comprising acid magnetic particles (p) based on an iron compound, the acid magnetic particles (p) being complexed by one or more gem-bisphosphonate compounds, of formula I:
X-L-CH(PO3H2)2 (I)
in which:
L represents an organic group connecting the X group to the gem-bisphosphonate group —CH(PO3H2)2;
X represents a chemical group capable of reacting with a biovector; all or some of the X groups of the particles optionally being coupled to a biovector. The invention relates, also to a process for the preparation of the compositions and their use, in particular as contrast products for Magnetic Resonance Imaging (MRI).
本发明涉及一种组合物,其包括基于
铁化合物的酸性磁性粒子(p),所述酸性磁性粒子(p)由一种或多种公式I:X-L-CH(PO3H2)2的
双膦酸盐化合物复合而成,其中:L表示将X基团连接到
双膦酸盐基团-CH(PO3H2)2的有机基团;X表示能够与
生物载体反应的
化学基团;所述粒子的所有或部分X基团可选择与
生物载体偶联。本发明还涉及一种制备该组合物的方法以及其用途,特别是作为磁共振成像(MRI)的对比剂。