prov:value
| - Examples of suitable yellow dye couplers include ??-ketocarboxamides and pivaloylacetanilides, of the general formulae wherein X is a hydrogen atom, a chlorine atom, a ???OSO2R group, a ???SO2R group, a ???O???C(=O)R group, or a ???SAr group, wherein R is an alkyl group, preferably with from 1 to about 22 carbon atoms, and Ar is an aryl group, preferably with from 6 to about 22 carbon atoms, Y, Z,
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