As a chelating agent 1,4,7,10-tetraazacyclododecane-1,4-diacetic acid derivatives

摘要

(57) Abstract Conversion 49 The chemical compound general formula (i) (in formula, as for R, hydrogen; It was non substitution, or or it was substituted with 1 - 10 oxygen atoms, direct condition or divergence chain or the annular C₁ - C₆ alkyl groups; Or with phenylene (as for any this things, it is non substitution or, or 1 - 3 it was substituted with the basis of C₁ - C₇, it is substituted with C₁ - C₆ alkyl groups of direct condition or divergence chain,) it was discontinued by when, they are C₁ - C₂₀ alkyl groups; The basis of aromatic is non substitution, or or alkoxy, carboxyl and suruhuamoiru, it is substituted with hydroxy alkyl or the amino group), or 20 - 31, 39, 42, 43, 44, 49 or that complex of the metal ion of two value or the trivalence which possess the atomic number which can change 57 - 83 in between, or that salt of the anion of the organic acid which it can allow physiology.