Pipermethystine: The Toxic Alkaloid in Kava Plants

Pipermethystine: The Toxic Alkaloid in Kava Plants

While the kava plant is widely known for its traditional uses, not all parts of the plant are safe for consumption. One of the most significant compounds of concern is pipermethystine, a toxic alkaloid found within the plant's structure. Unlike the beneficial compounds typically sought after in kava, pipermethystine poses health risks and is a primary reason why the method of preparation for kava products is so critical.

Pipermethystine is categorized as an alkaloid—a class of naturally occurring organic compounds that contain basic nitrogen atoms. Specifically, it is located in the aerial portions of the kava plant, which include the stems and leaves above the ground.

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Chemical Profile and Identification

From a scientific perspective, pipermethystine is identified by the IUPAC name [(3S)-6-oxo-1-(3-phenylpropanoyl)-2,3-dihydropyridin-3-yl] acetate. It possesses a distinct chemical structure that differentiates it from other kava-related compounds. Notably, it is not a kavalactone, as it lacks the lactone structure (a cyclic ester) characteristic of the active ingredients found in kava roots.

The molecule is defined by the chemical formula C16H17NO4 and has a molar mass of 287.315 g·mol. In laboratory settings, it is tracked using several unique identifiers, including CAS numbers 71627-22-0 and 375797-98-1, as well as PubChem CID 11231515.

Key Facts

  • Toxicity: Pipermethystine is a toxic alkaloid.
  • Location: Found in the aerial (aboveground) portions of the kava plant.
  • Chemical Distinction: It is not a kavalactone because it contains no lactone structure.
  • Product Safety: Correctly prepared kava root products contain almost no pipermethystine.
  • Molecular Weight: 287.315 g·mol.

Technical Specifications Summary

Property Value/Identifier
Chemical Formula C16H17NO4
Molar Mass 287.315 g·mol
CAS Numbers 71627-22-0, 375797-98-1
PubChem CID 11231515
ChemSpider ID 9406563
UNII APX8C8S6AW

Frequently Asked Questions

What is pipermethystine?

Pipermethystine is a toxic alkaloid found in the aerial parts of the kava plant.

Is pipermethystine a kavalactone?

No, it is not a kavalactone because it does not contain a lactone structure.

Where is pipermethystine found in the kava plant?

It is present in the aerial (aboveground) portions of the plant, rather than the roots.

Are commercial kava root products dangerous due to pipermethystine?

When kava root products are prepared correctly, they contain almost no pipermethystine, making them distinct from the toxic aerial parts of the plant.

What is the chemical formula of pipermethystine?

The chemical formula for pipermethystine is C16H17NO4.

References

  1. Nerurkar, PV; et al. (2004). "In vitro toxicity of kava alkaloid, pipermethystine, in HepG2 cells compared to kavalactones". Toxicological Sciences. 79 (1): 106–111. doi:10.1093/toxsci/kfh067. PMID 14737001.
  2. Lechtenberg M, Quandt B, Schmidt M, Nahrstedt A (2008). "Is the alkaloid pipermethystine connected with the claimed liver toxicity of Kava products?". Pharmazie. 63 (1): 71–4. PMID 18271308.