Poppy bases are commonly used as its hydrochloride, a white crystalline powder, odorless, soluble in chloroform, slightly soluble in water, slightly soluble in ethanol, almost insoluble in ether, melting point of 146 degrees – 148 degrees, is an isoquinoline alkaloid. It produces crystalline salts with a variety of inorganic salts and organic acids. The melting point of hydriodic salt is 200 degrees, and the melting point of Rotohydrochloric acid is 221 degrees. The effect of poppy bases is between morphine and codeine, mainly can release smooth muscle, especially vascular smooth muscle spasm, and can inhibit the excitability of the heart muscle, and the hydrochloride can treat angina pectoris and arterial embolism.