The Quantitative Conversion of Barbaloin to Aloe-Emodin and its Application to the Evaluation of Aloes
- 1 September 1963
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Pharmacy and Pharmacology
- Vol. 15 (1), 325-328
- https://doi.org/10.1111/j.2042-7158.1963.tb12789.x
Abstract
Barbaloin can be quantitatively converted into aloe-emodin by heating a solution in 4 N hydrochloric acid, containing 4 per cent ferric chloride, for 4 hr. in a boiling water bath under reflux. Each of these numerical conditions can be varied ±10 per cent without significantly altering the yields. The reaction has been successfully applied to the assay of commercial samples of aloes.Keywords
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