A New Method of Determining Acetylsalicylic Acid in the Presence of Medicinal Products**Scientific Section, A. PH. A., Washington meeting, 1934.

Some properties of the N-cinnamylephedrines, and the analysis of aspirin, caffeine and cinnamylephedrine in admixture**The portion of this paper concerning the analysis of the drug mixture was presented at the Pre-convention Meeting of the U. S. Pharmacopocial Convention, Washington, D. C., 1940.

“…Aspirin is determined gravimetrically after extraction from the acidified bicarbonate layer. The gravimetric determination of aspirin, as such, in pharmaceutical preparations was originally described by Hitchins (7), and has subsequently been applied by Berman (8) and Grove (9). The assay is open to theobjection that the value obtained for caffeine is subject to any errors arising from the titration procedure.…”

Effect of Calcium Succinate and Calcium Carbonate on the Stability of Aspirin Tablets

“…Various methods (7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25) have been used for the analysis of aspirin either as aspirin or salicylic acid in pharmaceuticals. T h e method of analysis used in this study was selected for its rapidity, simplicity, and fair accuracy.…”