1,2-Dibenzoylethene 1,2-Dibenzoylethylene 1,4-Diphenyl-2-butene-1,4-dione 2-Butene-1,4-dione, 1,4-diphenyl- 4070-75-1 Dibenzoylethylene Ethylene, 1,2-dibenzoyl- NSC28072 Usaf nd-57 WLN: RV1U1VR