| http://www.w3.org/ns/prov#value | - (B) compounds having the formula: H2 N-Y-OH, wherein Y is a phenyl or a pyridine group and the H2 N group and the OH group are linked through Y at the 1,3 or 1,4 positions, the compounds (A) and (B) being reacted in about a 1:2 molar ratio and under conditions wherein the CRO groups of (A) and the NH2 group of (B) react.
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