The acidic inactive metabolite of Metoprolol.Melting Point: As reportedAtmosphere:As reported Solubility:As reportedMethod for Determining Identity:Proton NMR (DMSO-d6) Spectroscopic and Mass Spectrometric AnalysisTLC Conditions:As reported Storage and Stability:May be stored at RT for short-term only. Long-term storage is recommended at 4°C. For maximum recovery of product, centrifuge the original vial prior to removing the cap. Hygroscopic. Store under Inert atmosphere.Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.Toxicity and Hazards: All products should be handled by qualified personnel only, trained in laboratory procedures.