| http://www.w3.org/ns/prov#value | - 2 and (CH2)I SO3??? in which I is 1 to 12; A2 is selected from a bond, ???O???, O???CO???, CO???O, CO???NR1-, ???NR1???CO, O???CO???NR1-, NR1-CO???O???; R is hydrogen or C1-4 alkyl; R1 is hydrogen, C1-4-alkyl or BX; R2 is hydrogen or C1-4 alkyl; B is a bond, or a straight branched alkanediyl, alkylene oxaalkylene, or alkylene (oligooxalkylene) group, optionally containing one or more fluorine subs
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