.alpha.-Hydroquinone .beta.-Quinol 1,4-Benzenediol 1,4-Dihydroxy-benzeen 1,4-Dihydroxy-benzol 1,4-Dihydroxybenzen 1,4-Dihydroxybenzene 1,4-Diidrobenzene 123-31-9 4-Hydroxyphenol Arctuvin Artra Benzene, p-dihydroxy- Benzohydroquinone Benzoquinol Black and White Bleaching Cream Derma-Blanch Diak 5 Dihydroxybenzene Eldopaque Eldoquin HE 5 HQ HYDROQUINONE Hidroquinone Hydrochinon Hydroquinol Hydroquinole Idrochinone Melanex NCI-C55834 NSC9247 Phiaquin Quinol Tecquinol Tenox HQ Tequinol Usaf ek-356 WLN: QR DQ p-Benzenediol p-Dihydroxybenzene p-Dioxobenzene p-Dioxybenzene p-Hydroquinone p-Hydroxyphenol