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US06881830B2 Metal complexes 失效
金属配合物

Metal complexes
摘要:
Metal complexes of metals of the scandium group with an azo compound which conforms to the formula (I) or to one of its tautomeric structures where R is OH, NH2, NH—CN, arylamino or acylamino, R′ is NH2, NH—CN, arylamino or acylamino and R1 and R1′ are independently —OH or —NH2.
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