The quantitative determination of some Mitragyna oxindole alkaloids. II. Colorimetry (using the Vitali-Morin reaction).
D000470:Alkaloids / Q000032:analysis*; D003124:Colorimetry; D007211:Indoles / Q000032:analysis*; D008722:Methods; D010946:Plants, Medicinal / Q000032:analysis*
D000470:Alkaloids; D007211:Indoles