| http://www.w3.org/ns/prov#value | - lamino, halogen, sulfo or a radical of the formula --X--SO2 CH2 CH2 OSO3 H, in which X is a direct bond or --CONHCH2 CH2 --, and the compounds of the formulae (39) and (40) together containing only one sulfo group and together containing only one radical of the formula --X--SO2 CH2 CH2 OSO3 H.
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