3,3-Diphenyl-3-dimethylcarbamoyl-1-propyne 56767-15-8 BENZENEACETAMIDE, N,N-DIMETHYL-alpha-ETHYNYL-alpha-PHENYL- Benzeneacetamide, alpha-ethynyl-N,N-dimethyl-alpha-phenyl- N,N-Dimethyl-alpha-ethynyl-alpha-phenylbenzeneacetamide