formononetin + reduced [NADPH--hemoprotein reductase] + O2 => calycosin + oxidized [NADPH--hemoprotein reductase] + H2O + H(+)
formononetin + reduced [nadph--hemoprotein reductase] + o2 => calycosin + oxidized [nadph--hemoprotein reductase] + h2o + h(+)
formononetin + reduced [NADPH--hemoprotein reductase] + O2 => calycosin + oxidized [NADPH--hemoprotein reductase] + H2O + H(+)
formononetin + reduced [nadph--hemoprotein reductase] + o2 => calycosin + oxidized [nadph--hemoprotein reductase] + h2o + h(+)