Colorimetric Assay of Caffeine in Crude Drugs and in Pharmaceutical Preparations
- 1 January 1984
- journal article
- research article
- Published by Taylor & Francis in Analytical Letters
- Vol. 17 (1) , 77-88
- https://doi.org/10.1080/00032718408065266
Abstract
The well known Murexide reaction for purine bases was modified and optimized for the quantification of caffeine in crude drugs, refreshing drinks [coffee, tea and cola-type drinks] and pharmaceuticals. The method was also applied for the detection and assay of caffeine in mixtures of illegal opiate samples [heroin and opium]. It was also applied to assay theobromine and theophylline alongside with caffeine in their natural and synthetic mixtures after a simple separating procedure depending on their different bascities.This publication has 3 references indexed in Scilit:
- CAFFEINE IN PLASMA AND SALIVA BY A RADIOIMMUNOASSAY PROCEDURE1976
- Analysis of ?Morphine base?Archives of Toxicology, 1973
- The Colorimetric Determination of Caffeine in Tablet MixturesJournal of the American Pharmaceutical Association (Scientific ed.), 1953