guaiacol + reduced [NADH--hemoprotein reductase] + O2 <=> oxidized [NADH--hemoprotein reductase] + catechol + formaldehyde + H2O + H(+)
guaiacol + reduced [nadh--hemoprotein reductase] + o2 <=> oxidized [nadh--hemoprotein reductase] + catechol + formaldehyde + h2o + h(+)