abstract |
PROBLEM TO BE SOLVED: To provide a compound having excellent holding power, giving a color tone very similar to a natural tantan state, and requiring a short time for color development, and a composition containing the compound. SOLUTION: The following formula (I): [Wherein R 1 is a hydrogen atom; selected from hydroxyl, sulfonyl, carboxyl, a predetermined alkyl group, and the like; R 2 is a hydrogen atom; selected from a predetermined alkyl group, a predetermined alkenyl group, etc.]. |