Absorption spectra of cardiac glycosides and aglycones in sulfuric acid

1960 ◽  
Vol 49 (12) ◽  
pp. 777-779 ◽  
Author(s):  
B.T. Brown ◽  
S.E. Wright
Keyword(s):  
Sulfuric Acid ◽  
Absorption Spectra ◽  
Cardiac Glycosides

STEROIDAL SAPOGENINS. XXI.1IDENTIFICATION BY THE ABSORPTION SPECTRA OF THEIR SULFURIC ACID CHROMOGENS

1952 ◽  
Vol 17 (5) ◽  
pp. 747-750 ◽  
Author(s):  
G. DIAZ ◽  
ALEJANDRO ZAFFARONI ◽  
G. ROSENKRANZ ◽  
CARL DJERASSI
Keyword(s):  
Sulfuric Acid ◽  
Absorption Spectra

Absorption spectra of some pentacy clic triterpenoids in sulfuric acid

1968 ◽  
Vol 4 (4) ◽  
pp. 182-183
Author(s):  
E. T. Oganesyan ◽  
A. L. Shinkarenko ◽  
V. A. Bandyukova
Keyword(s):  
Sulfuric Acid ◽  
Absorption Spectra

Absorption spectra of pentacyclic triterpenoids in sulfuric acid

1971 ◽  
Vol 7 (2) ◽  
pp. 139-141 ◽  
Author(s):  
V. D. Ponomarev ◽  
É. T. Oganesyan ◽  
V. F. Semenchenko
Keyword(s):  
Sulfuric Acid ◽  
Absorption Spectra ◽  
Pentacyclic Triterpenoids

The reactions of the chromate, dichromate, and permanganate ions with 100% sulfuric acid and dilute oleum

1987 ◽  
Vol 65 (11) ◽  
pp. 2665-2669 ◽  
Author(s):  
R. J. Gillespie ◽  
R. Kapoor
Keyword(s):  
Sulfuric Acid ◽  
Absorption Spectra ◽  
Potassium Permanganate ◽  
Potassium Dichromate ◽  
Potassium Chromate

Solutions of potassium chromate and potassium dichromate in 100% sulfuric acid and dilute oleum have been investigated by cryoscopic and conductimetric methods. It is shown that they both react to give the compound CrO2(HSO4)2. The absorption spectra of solutions of potassium chromate and dichromate in 100% sulfuric acid are very similar to the spectra of species of the type CrO2X2. Potassium permanganate dissolves in 100% sulfuric acid to give green solutions which are shown to contain MnO3•SO4H. The formation of this compound has been further confirmed by conductimetric measurements in dilute oleum. The absorption spectra of these green solutions are also consistent with the formation of a species of the type MnO3X.

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