comments: It seems to be a metabolite of this compound https://pubchem.ncbi.nlm.nih.gov/compound/Tebuconazole and this company seems to have a CAS number for it: https://www.schd-shimadzu.com/en/metabolites/2726-167445-Hydroxy-tebuconazole.html but then I also find that CAS number for this other company's compound https://www.lgcstandards.com/LB/en/search?text=212267-64-6
Tebuconazool-OH (hydroxytebuconazool)