Hydrochlride salt of 1-tert-Butylamino-3-(2-chloro-5-carboxyphenoxy)-2-propanol is an impurity of Bupranolol (B689652), an antagonist at the cardiostimulatory low-affinity state of b(1)-adrenoceptors and is known to treat hypertension and tachycardia. Melting Point: 178-184°C (dec.)Solubility:DMSO, Methanol