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n.1.(Chem.) A white crystalline substance, C6H4(OH)2, of the phenol series, found in various plants; - so called because first obtained by distillation of gum catechu. Called also catechol, oxyphenol. etc.
References in periodicals archive ?
In addition, the antioxidant capacity of the ascorbic acid, gallic acid and pyrocatechin standards was also determined in aqueous solvent.
Oligomera produced on the basis of individual substances of pyrocatechin, hydrochinone and pyrogallol had low plasticizing ability.