Determination of amodiaquine in pharmaceuticals by reaction with periodate and spectrophotometry or by high-performance liquid chromatography
- 1 January 1990
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 115 (3) , 333-335
- https://doi.org/10.1039/an9901500333
Abstract
Two methods are described for the determination of amodiaquine in pharmaceuticals. In the first method, amodiaquine was treated with periodate at pH 7.5–8.5 to yield a chromogen, which is believed to be a 1,4-benzoquinone imine derivative, and extracted into chloroform for spectrophotometric assay. The maximum molar absorptivity was found to be 2.17 × 103 l mol–1 cm–1 at 442 nm. Primaquine and chloroquine, if present also, do not interfere. The second method, which was used for the simultaneous determination of amodiaquine, primaquine and chloroquine, is based on high-performance liquid chromatography on an octadecylsilane column using a mobile phase of methanol-water (80 + 20) containing 0.5% anhydrous acetic acid and an over-all concentration of sodium dodecyl sulphate of 0.5 mM, with detection at 340 nm.Keywords
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