Date published: 2026-4-25

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Mitragynine (CAS 4098-40-2)

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CAS Number:
4098-40-2
Molecular Weight:
398.50
Molecular Formula:
C23H30N2O4
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
Available in US only.
* Refer to Certificate of Analysis for lot specific data.

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Mitragynine is a naturally occurring alkaloid found in the leaves of the Mitragyna speciosa tree, known as kratom. Mitragynine is the primary active compound in kratom and is responsible for its psychoactive effects. Mitragynine interacts with opioid receptors in the brain, producing analgesic (pain-relieving) and sedative effects. It can also stimulate the release of neurotransmitters such as serotonin and norepinephrine, contributing to its mood-enhancing and energizing properties. Mitragynine has raised concerns due to potential health risks and addictive properties.


Mitragynine (CAS 4098-40-2) References

  1. Neurobiology of Kratom and its main alkaloid mitragynine.  |  Suhaimi, FW., et al. 2016. Brain Res Bull. 126: 29-40. PMID: 27018165
  2. Mitragynine (Kratom) impairs spatial learning and hippocampal synaptic transmission in rats.  |  Hassan, Z., et al. 2019. J Psychopharmacol. 33: 908-918. PMID: 31081443
  3. The effects of mitragynine and morphine on schedule-controlled responding and antinociception in rats.  |  Hiranita, T., et al. 2019. Psychopharmacology (Berl). 236: 2725-2734. PMID: 31098655
  4. Pharmacokinetics and pharmacodynamics of mitragynine, the principle alkaloid of Mitragyna speciosa: present knowledge and future directions in perspective of pain.  |  Ramachandram, DS., et al. 2019. J Basic Clin Physiol Pharmacol. 31: PMID: 31665120
  5. Acute mitragynine administration suppresses cortical oscillatory power and systems theta coherence in rats.  |  Thériault, RK., et al. 2020. J Psychopharmacol. 34: 759-770. PMID: 32248751
  6. Pharmacokinetics and Safety of Mitragynine in Beagle Dogs.  |  Maxwell, EA., et al. 2020. Planta Med. 86: 1278-1285. PMID: 32693425
  7. Pharmacological Comparison of Mitragynine and 7-Hydroxymitragynine: In Vitro Affinity and Efficacy for μ-Opioid Receptor and Opioid-Like Behavioral Effects in Rats.  |  Obeng, S., et al. 2021. J Pharmacol Exp Ther. 376: 410-427. PMID: 33384303
  8. The effects of chronic mitragynine (Kratom) exposure on the EEG in rats.  |  Suhaimi, FW., et al. 2021. Neurosci Lett. 745: 135632. PMID: 33444671
  9. Kratom-Associated Fatalities in Northern Nevada-What Mitragynine Level Is Fatal?  |  Schmitt, J., et al. 2021. Am J Forensic Med Pathol. 42: 341-349. PMID: 34091497
  10. Methadone, Buprenorphine, and Clonidine Attenuate Mitragynine Withdrawal in Rats.  |  Hassan, R., et al. 2021. Front Pharmacol. 12: 708019. PMID: 34322028
  11. Mitragynine improves cognitive performance in morphine-withdrawn rats.  |  You, CY., et al. 2022. Psychopharmacology (Berl). 239: 313-325. PMID: 34693456
  12. Mini review: Potential therapeutic values of mitragynine as an opioid substitution therapy.  |  Harun, N., et al. 2022. Neurosci Lett. 773: 136500. PMID: 35114335
  13. The Chemical and Pharmacological Properties of Mitragynine and Its Diastereomers: An Insight Review.  |  Karunakaran, T., et al. 2022. Front Pharmacol. 13: 805986. PMID: 35281925
  14. The respiratory depressant effects of mitragynine are limited by its conversion to 7-OH mitragynine.  |  Hill, R., et al. 2022. Br J Pharmacol. 179: 3875-3885. PMID: 35297034
  15. Asymmetric Total Syntheses of Mitragynine, Speciogynine, and 7-Hydroxymitragynine.  |  Sakamoto, J., et al. 2022. Chem Pharm Bull (Tokyo). 70: 662-668. PMID: 36047237

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Mitragynine, 2.5 mg

sc-484360
2.5 mg
$617.00
US: Only available in the US

Mitragynine, 5 mg

sc-484360A
5 mg
$1025.00
US: Only available in the US

Mitragynine, 10 mg

sc-484360B
10 mg
$1739.00
US: Only available in the US

Mitragynine, 100 mg

sc-484360C
100 mg
$5717.00
US: Only available in the US

Mitragynine, 1 g

sc-484360D
1 g
$9863.00
US: Only available in the US

Mitragynine, 5 g

sc-484360E
5 g
$34073.00
US: Only available in the US

Mitragynine, 10 g

sc-484360F
10 g
$64571.00
US: Only available in the US