.beta.-Phenylpropiolophenone 1,3-Diphenylpropynone 1-Benzoyl-2-phenylacetylene 2-Propyn-1-one, 1,3-diphenyl- 3-Phenylpropiolophenone 7338-94-5 Benzoylphenylacetylene Diphenylpropynone NSC138646 Phenethynyl phenyl ketone Phenyl phenylethynyl ketone Phenylbenzoylacetylene Propiolophenone, 3-phenyl-