Pharmacology
Deeper science: receptor binding, structure-activity, minor alkaloids.
3 pages
Kratom's Minor Alkaloids
Laboratory evidence on selected kratom alkaloids at opioid, serotonin, and adrenergic receptors, with the limits of each assay.
Morphine vs. Mitragyna Alkaloids
A comparison of structure, receptor affinity, signaling, and evidence limits for morphine and mitragynine-derived compounds.
Chemical Structures (Appendix)
A visual guide to mitragynine, kratom alkaloids, 7-hydroxymitragynine, and related metabolites and derivatives.