Hydroxylates (-)-(4S)-limonene to (-)-trans-isopiperitenol, a precursor of (-)-menthol, responsible for the cooling sensation of peppermint. Fluorinated substrate analogs are hydroxylated with the same regio- and stereochemistry. (4S)-limonene + O2 + reduced [NADPH--hemoprotein reductase] = (1S,6R)-isopiperitenol + H(+) + H2O + oxidized [NADPH--hemoprotein reductase] Belongs to the cytochrome P450 family. Mint condition - Issue 113 of January 2010