英文别名methyl (S)-2-((tert-butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoate; Gadoxetate disodium intermediate; Gadoxetate Disodium Impurity 17; N-[(1,1-Dimethylethoxy)Carbonyl]-O-ethyl-L-Tyrosine Methyl Ester; Gadoxetic Acid Disodium Salt Intermediate