1,1-Diacetyl-2-phenylethylene 2,4-Pentanedione, 3-(phenylmethylene)- 2,4-Pentanedione, 3-benzylidene- 2-Acetyl-1-phenyl but-1-en-3-one 3-Benzylidene-2,4-pentanedione 3-Benzylideneacetylacetone 4335-90-4 Benzalacetylacetone Benzylidene acetylacetone NSC35140