prov:value
| - Z is a hydrogen, a carboxylic acid, a hydroxy, a phosphato, a phosphato ester, a sulfonyl, a sulfonate, a sulfate, a branched or straight-chained polyalkylene oxide, a nitryl, a glyceryl, an aryl unsubstituted or substituted with a C1-30 alkyl or alkenyl, (preferably C1-25 alkyl), a carbohydrate unsubstituted or substituted with a C1-10 alkyl or alkenyl (preferably a C1-5 alkyl) or an ammonium;
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