prov:value
| - As for the group which is capable of being released by the reaction with an oxidation product of a color developing agent, for example, a halogen atom such as chlorine, bromine and fluorine, an alkoxy group, an aryloxy group, a heterocyclic-oxy group, an acyloxy group, a sulfonyloxy group, an alkoxycarbonyloxy group, an aryloxycarbonyl group, an alkyloxalyloxy group, an alkoxyoxalyloxy group, an a
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