L-Tetrahydropalmatine (L-THP)

L-Tetrahydropalmatine (L-THP) is a protoberberine alkaloid isolated from plants of the Corydalis and Stephania genera, supplied strictly for laboratory research use only (not for human or veterinary use). It is studied by research laboratories as a reference alkaloid in dopaminergic receptor and natural-product pharmacology investigations.

Research Background

L-THP is the levorotatory enantiomer of tetrahydropalmatine and is investigated in receptor pharmacology as a reference ligand at dopamine receptor subtypes. In in-vitro models, researchers examine its reported antagonist interactions at D1 and D2 receptor sites as part of studies characterising dopaminergic signalling and natural-product structure-activity relationships.

Additional research explores its role as a plant-derived alkaloid reference standard for phytochemical and analytical method development, including chromatographic identification and quantification. L-THP is used purely as a laboratory reference chemical for these mechanistic and analytical applications.

L-Tetrahydropalmatine Specifications & Handling

• Purity: ≥99% as determined by analytical assay.
• Analytical verification: third-party HPLC and mass spectrometry, with a batch-specific Certificate of Analysis (COA) available.
• Physical form: crystalline powder (batch dependent).
• Storage: store sealed and protected from light and moisture, in a cool dry environment consistent with generic laboratory practice.
• Handling: apply standard laboratory safety procedures and use appropriate personal protective equipment.

Related Research Compounds

Laboratories studying alkaloid and dopaminergic reference systems may also reference Agmatine Sulfate and Galantamine Hydrobromide, alongside L-Theanine. Explore the wider selection of research nootropics for related reference compounds. All products are supplied for laboratory research use only. This class of compound may face import or supply restrictions, and researchers must confirm the regulatory and import status applicable in their jurisdiction before ordering.

For laboratory and research use only. This product is not for human or veterinary consumption, and nothing on this page is medical advice. Researchers are responsible for compliance with all applicable Australian laws (including TGA regulations) and institutional guidelines.