Synonyms: 2,2-DIHYDROXY-1H-BENZ[F]INDENE-1,3(2H)-DIONE;2,2-DIHYDROXY-1H-BENZ[F]INDENE-1,3(2H)-DIONE, HYDRATE;2,2-DIHYDROXY-(1H)-BENZ[F]INDENE-1,3(2H)-DIONE MONOHYDRATE;7,2-Dihydroxy-1H-benz[f]indene-1,3(2H)-dione;BENZO[F]NINHYDRIN MONOHYDRATE;BENZO(F)NINHYDRIN MONOHYDRATE FOR &;BENZO(F)NINHYDRIN HYDRATE;2,2-DIHYDROXY-1H-BENZ[F]INDENE-1,3(2H)-DIONE 93%