9,17-dimethoxy-coryna-16,18-diene-16-carboxylic acid methyl ester

Isopaynantheine (Item No. 39879) is an analytical reference standard categorized as an opioid.1 Isopaynantheine is an alkaloid found in M. speciosa (Kratom in Thai).2 It has antinociceptive activity in mice.1 This product is intended for research and forensic applications.WARNING This product is not for human or veterinary use.

[1] SOUMEN CHAKRABORTY. Kratom Alkaloids as Probes for Opioid Receptor Function: Pharmacological Characterization of Minor Indole and Oxindole Alkaloids from Kratom[J]. ACS Chemical Neuroscience, 2021, 12 14: 2661-2678. DOI: 10.1021/acschemneuro.1c00149
[2] ANIKA A. PHILIPP . Metabolism studies of the Kratom alkaloids mitraciliatine and isopaynantheine, diastereomers of the main alkaloids mitragynine and paynantheine, in rat and human urine using liquid chromatography–linear ion trap-mass spectrometry[J]. Journal of Chromatography B, 2011, 879 15: Pages 1049-1055. DOI: 10.1016/j.jchromb.2011.03.005