Quininae Iodohydriodidum. Quinine Iodohydriodide.
C20H23N2O2I3 = 705.98
Synonyms.—Quininae Diiodo-hydriodidum; Quinine Periodide; Iodised Quinine Hydriodide.
Quinine iodo-hydriodide, C20H24N2O2, HI+I2, may be prepared by precipitating a solution of a quinine salt with a solution of iodine in potassium iodide; or extemporaneously by triturating 70 of quinine hydrochloride, 50 of potassium iodide, and 20 of iodine, with a little alcohol; this corresponds to 100 parts of quinine iodo-hydriodide. It occurs as a reddish-brown amorphous powder. It contains 45.9 per cent. of quinine, and is rich in iodine, which is liberated readily from the salt.
Insoluble in water or alcohol.
Action and Uses.—Quinine iodo-hydriodide has been employed in syphilitic disorders, and was formerly recommended for use in rheumatism.
Dose.—½ to 2 ½ decigrams (1 to 4 grains).