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The preparation, properties, and uses of silicoduodecitungstic acid**Contribution from the Department of Chemistry of the University of Illinois.

โœ Scribed by North, Edward Oscar ;Beal, George D.

Publisher
Elsevier
Year
1924
Weight
580 KB
Volume
13
Category
Article
ISSN
0898-140X

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The Preparation and Optical Rotation of
The Preparation and Optical Rotation of Pure Quinidine**Contribution from the Department of Research in Pure Chemistry, Mellon Institute of Industrial Research.
โœ Butler, C.L. ;Cretcher, Leonard H. ๐Ÿ“‚ Article ๐Ÿ“… 1933 ๐Ÿ› Elsevier โš– 149 KB

Quinidine is separated from the mixture of alkaloids extracted from cinchona bark after removal of q ~i n i n e . ~ Since the hydrogenated derivatives of the four common cinchona alkaloids, quinine, quinidine, cinchonine and cinchonidine, also occur naturally, and since the solubilities of the reduc