?2-Hydroxy-5-trifluoromethylpyridine?(CAS NO.33252-63-0), its Synonyms are?2H-5TFMP ; 5-(Trifluoromethyl)-2(1H)-pyridinone?;?2(1H)-Pyridinone, 5-(trifluoromethyl)-??. It is?yellow to brown powder.