.alpha.,.alpha.'-Bibenzhydrol 1,1,2,2-Tetraphenyl-1,2-ethanediol 1,2-Ethanediol, 1,1,2,2-tetraphenyl- 464-72-2 Benzopinacol Benzopinacone Benzpinacol Benzpinacone NSC120377 Tetraphenyl-1,2-ethanediol Tetraphenylethylene glycol