different between hydroquinone vs catechol

English

hydro- +? quinone

hydroquinone (countable and uncountable, plural hydroquinones)

(organic chemistry) The diphenol para-dihydroxy benzene, used as a mild reducing agent in photographic developing; isomeric with catechol and resorcinol.

From catech(u) +? -ol.

catechol (countable and uncountable, plural catechols)

(organic chemistry) The biologically important diphenol ortho-dihydroxy benzene; isomeric with hydroquinone and resorcinol.

“catechol”, in Lexico, Dictionary.com; Oxford University Press, 2019–present.
“catechol”, in Merriam–Webster Online Dictionary, (Please provide a date or year).

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