HTOSOAMINE EYDBOBROMIDE 389 



finally with ether, which dissolves the alkaloid. The latter 

 is recovered by distillation. 



Properties. — "White, indistinct crystals, or a white pow- 

 der, without odor, and having a bitter, acrid taste. Deli- 

 quescent in damp air. Soluble in 0.5 part of water, and 

 in 2.5 parts of alcohol; very slightly soluble in ether or 

 chloroform. 



Z>pse.— H., gr.i.-ii. (.06-.12); D., gr.^-^ (.001-.002). 



HTOSCTAMIN.ffl HiDEOBBOMIDUM. 



Hyoscyamirie Hydrobfomide. CnHjsN O3H Br. (U. S. P.) 

 The hydrobromide of an alkaloid obtained from hyo- 



scyamus. 



Properties. — A yellowish- white, amorphous, resin-like 



mass, or prismatic crystals, having, particularly when damp, 



a tobacco-like odor, and an acrid, nauseous and bitter taste. 



Deliquescent on exposure to the air. Soluble in about 0.3 



part of water, 2 parts of alcohol, 3,000 parts of ether, or 250 



parts of chloroform. 



Dose.—H.., gr.i.-ii. (.06-.12); D., gn-eV-tTr (•001-.002). 



Hyosoin^ HYDEOBEOMrDUM. Hyoscine Hydrobromide. 

 C„H,,N 0,H Br. (U. S. P. & B. P.) 



The hydrobromide of an alkaloid obtained from hyo- 

 scyamus. 



Properties.- — Colorless, transparent, rhombic crystals ; 

 odorless and having an acrid, slightly bitter taste. Perma- 

 nent in the air. Soluble in 1.9 parts of water, and in 13 

 parts of alcohol ; very slightly soluble in ether or chloro- 

 form. 



i?ose.— H.,gr.i-i (.001-.015); ■D.,gx.^.^ (.0004-.0006). 



Action Internal.^T:h.6 action of hyoscyamus is a resul- 

 tant of that of its two alkaloids, hyoscine and hyoscyamine. 

 The latter is practically atropine, except that its mydriatic 

 action is shorter. Hyoscine, in poisonous doses, is a power- 



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