Nipecotic acid


3-Carboxypiperidine, (±)-β-Homoproline, Hexahydronicotinic acid, 3-Piperidinecarboxylic acid
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:
Pricing and availability is not currently available.

Quality Level




261 °C (dec.) (lit.)


water: soluble 50 mg/mL, clear, colorless to faintly yellow

SMILES string




InChI key


Gene Information

human ... SLC23A2(9962)

General description

R(−)-Nipecotic acid is a potential inhibitor of uptake of γ-aminobutyric acid (GABA) in rat brain slices. Lipophilic derivatives of nipecotic acid are used as drugs for the treatment of epilepsy.


Nipecotic acid was used in determination of the antiepileptic drug vigabatrin and the amino acid neurotransmitters in rat brain extracellular fluid by capillary electrophoresis with laser-induced fluorescence detection.
Reactant for concurrent esterification and N-acteylation of amino acids with orthoesters

Reactant for synthesis of:
HCV NS5B polymerase inhibitors
Cathepsin S inhibitors
Orally bioavailable P2Y12 antagonists for inhibition of platelet aggregation
Positive allosteric modulator of metabotropic glutamate receptor 4


1, 5, 25 g in poly bottle

Other Notes

Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. 211672.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.


Exclamation mark

Signal Word


Hazard Statements

Precautionary Statements

Target Organs

Respiratory system

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Nadia Benturquia et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 806(2), 237-244 (2004-06-03)
Capillary electrophoresis with laser-induced fluorescence detection (CE-LIFD) coupled to in vivo microdialysis sampling was used in order to monitor simultaneously a drug and several neurotransmitters in the brain extracellular fluid. Determination of the antiepileptic drug vigabatrin and the amino acid...
Hui-Ling Diao et al.
Frontiers in physiology, 8, 897-897 (2017-11-23)
The globus pallidus is a central nucleus in the basal ganglia motor control circuit. Morphological studies have revealed the expression of adenosine A2A receptors in the globus pallidus. To determine the modulation of adenosine A2A receptors on the activity of...
Gabriele Quandt et al.
Bioorganic & medicinal chemistry, 21(11), 3363-3378 (2013-04-20)
γ-Amino butyric acid (GABA) is the major inhibitory neurotransmitter in the mammalian central nervous system (CNS). A malfunction of the GABAergic neurotransmission is connected to several neuronal disorders like epilepsy, Alzheimer's disease, neuropathic pain, and depression. One possibility to enhance...
Inhibition of the uptake of GABA and related amino acids in rat brain slices by the optical isomers of nipecotic acid.
G A Johnston et al.
Journal of neurochemistry, 26(5), 1029-1032 (1976-05-01)
Robert A Darnall et al.
American journal of physiology. Regulatory, integrative and comparative physiology, 302(5), R551-R560 (2011-12-14)
Arousal is an important defense against hypoxia during sleep. Rat pups exhibit progressive arousal impairment (habituation) with multiple hypoxia exposures. The mechanisms are unknown. The medullary raphe (MR) is involved in autonomic functions, including sleep, and receives abundant GABAergic inputs....

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