English English Catecholase catechol catechol catechol catechols catechol structure catechol English https://en.wikipedia.org/wiki/Catechol English catechol catechol catechol catechol English catechols English catecholate catechols catechol catechol catechol catechol English catechol catechols catechol catechol catechol Catechol catechol catechol English catechol catechol English catechol catechol catechol Catecholase 1,2-dihydroxybenzene, English catechol catechol English Catechol catechol 1,2-dihydroxybenzene, catechol Catechol catechol catechol Catechol catechols