1-(1,1-Diphenyl-3-dimethylamino-2-methyl)propyldiphenylphosphine oxide hydrochloride 51713-30-5 Phosphine oxide, diphenyl((1,1-diphenyl-3-dimethylamino-2-methyl)propyl)-, hydrochloride Phosphine oxide, diphenyl((alpha-phenyl-alpha-((2-dimethylamino-1-methyl)ethyl))benzyl)-, hydrochloride