| http://www.w3.org/ns/prov#value | - A reactive dye, as claimed in claim 1, wherein n=1-7 and R is a carboxylic acid, an alkali or alkaline earth metal salt of a carboxylic acid, or R is ???(C???O)???Rx, where Rx is a chloride, fluoride or azide; or Rx is selected so as to make R a hydroxybenzotriazolyl ester, a succinimidyl ester, a sulfosuccinimidyl ester, an alkali or alkaline earth metal salt of a sulfosuccinimidyl ester, a symme
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