1,3-Indandione, 2-(diphenylacetyl)-, 1-hydrazone (8CI) 1H-Indene-1,3(2H)-dione, 2-(diphenylacetyl)-, 1-hydrazone (9CI) 2-(Diphenylacetyl)-1H-indene-1,3(2H)-dione 1-hydrazone 5102-79-4 Difezon EINECS 225-821-3 NSC 83445