oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen thalianol hydroxylase activity https://github.com/geneontology/go-ontology/issues/28051 In Field and Osbourn 2008 (PMID:18356490), thalianol is referred to as (3S,13S,3R)-malabarica-8,17,21-trien-3-ol and thalian-diol is referred to as (3S,13S,14R)-malabarica-8,17,21-trien-3,?-diol, but the error in this naming system was pointed out in Kolesnikova 2007 (PMID:17474751). The new names used in the definition have been approved by the authors (Field and Osbourn 2008). MetaCyc:RXN-9631 molecular_function GO:0080014 Catalysis of the reaction: a thalianol = a thalian-diol. This reaction is the addition of a hydroxyl group to thalianol ((13R,14R,17E)-podioda-8,17,21-trien-3beta-ol) to create a thalian-diol ((13R,14R,17E)-podioda-8,17,21-trien-3beta,X-diol), where the hydroxyl group may be attached at one of several different available carbons in ring B or C of thalianol, indicated by the X.