L-Pipecolic Acid TCI P1404

L-Pipecolic Acid from TCI (product code P1404) is a cyclic, non-proteinogenic amino acid built on a six-membered piperidine ring. It is a homologue of L-proline whose ring is one carbon atom larger. In nature, pipecolic acid forms as a metabolite of lysine and plays a part in plant defence systems. In the chemistry laboratory, TCI classifies it as an organocatalyst. It is also an important chiral building block for synthesising peptidomimetics and a range of piperidine-based pharmaceutical compounds.

Chemists choose this material because, like proline, it carries a secondary amine and a carboxylic acid together within a rigid chiral framework. This bifunctional structure lets it catalyse aldol, Mannich, and Michael reactions through enamine or iminium intermediates. Its six-membered ring gives it a different geometry and conformational flexibility from proline, so it can deliver different selectivity. For this reason, researchers often compare the two when optimising a catalyst. As an enantiomerically pure amino acid, the compound is also a reliable source of stereochemistry for asymmetric synthesis.

In Indonesia, L-Pipecolic Acid is relevant to organic chemistry researchers developing asymmetric synthesis methods, and to university and research institute laboratories that study organocatalysis. Medicinal chemistry groups working on piperidine-containing drug candidates or peptidomimetic scaffolds can also use it as a chiral starting material. Postgraduate students running catalyst screening projects often use it next to L-proline to see how ring size affects yield and stereoselectivity. Sourcing a TCI-branded reagent helps keep results consistent from one study to the next.

• Asymmetric aldol reactions: its secondary amine and carboxylic acid work together through enamine intermediates, making it a useful proline-type organocatalyst for building chiral β-hydroxy carbonyl compounds.
• Mannich and Michael reactions: its bifunctional chiral framework can activate substrates through enamine or iminium pathways, which helps researchers form carbon–carbon bonds with stereocontrol.
• Catalyst optimisation studies: its six-membered ring has a different geometry from proline, so researchers screen it next to L-proline to see how ring size changes selectivity and reactivity.
• Peptidomimetic synthesis: as an enantiomerically pure cyclic amino acid, it adds a conformationally constrained piperidine unit to modified peptides, a common strategy in bioactive molecule design.
• Synthesis of piperidine-based pharmaceutical compounds: it acts as a chiral building block that brings defined stereochemistry into piperidine scaffolds used in medicinal chemistry and drug discovery research.

• Compound type: cyclic non-proteinogenic amino acid (L-enantiomer, homologue of L-proline)

Keep L-Pipecolic Acid in its original, tightly closed TCI container in a cool, dry, well-ventilated place, away from direct sunlight, heat sources, and incompatible materials such as strong oxidising agents. Reseal the container straight after use so the material does not pick up moisture or contamination, which could affect its catalytic performance and enantiomeric integrity. Always follow the storage conditions on the product label and Safety Data Sheet. Handle the compound in a fume hood or well-ventilated area while wearing suitable personal protective equipment, including safety glasses, gloves, and a lab coat. Avoid breathing in dust and avoid contact with skin and eyes. Dispose of waste according to local regulations and your institution's chemical waste procedures.

—