1,4-Benzenediol, phenyl- 1079-21-6 2,5-Biphenyldiol 2,5-Dihydroxybiphenyl 2-Phenylhydroquinone Hydroquinone, phenyl- NSC407988 Phenylhydroquinone WLN: QR DQ BR [1,1'-Biphenyl]-2,5-diol