The Collaborative International Dictionary
pyrocatechin
Oxyphenol \Ox`y*phe"nol\, n. (Chem.) A phenol, C6H4(OH)2, produced by the distillation of catechin; called also oxyphenic acid, and now pyrocatechin.
Wiktionary
pyrocatechin
n. (context obsolete organic compound English) pyrocatechol