Pricing Availability   Qty
Description: Selective GABAA-ρ antagonist
Chemical Name: (1,2,5,6-Tetrahydropyridin-4-yl)methylphosphinic acid
Purity: ≥97% (HPLC)
Citations (12)
Reviews (1)
Literature (1)

Biological Activity for TPMPA

TPMPA is a selective, competitive GABAA-ρ antagonist with only minimal effects on GABAA and GABAB receptors (Kb values are 2.1 μM (antagonist), 320 μM (antagonist) and EC50 ~ 500 μM (weak agonist) respectively). Displays 8-fold selectivity for human recombinant ρ1 receptors over ρ2 receptors.

Technical Data for TPMPA

M. Wt 161.14
Formula C6H12NO2P
Storage Store at RT
Purity ≥97% (HPLC)
CAS Number 182485-36-5
PubChem ID 5520
Smiles OP(C1=CCNCC1)(C)=O

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.

Tocris products are intended for laboratory research use only, unless stated otherwise.

Solubility Data for TPMPA

Solvent Max Conc. mg/mL Max Conc. mM
water 100

Preparing Stock Solutions for TPMPA

The following data is based on the product molecular weight 161.14. Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Select a batch to recalculate based on the batch molecular weight:
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 6.21 mL 31.03 mL 62.06 mL
5 mM 1.24 mL 6.21 mL 12.41 mL
10 mM 0.62 mL 3.1 mL 6.21 mL
50 mM 0.12 mL 0.62 mL 1.24 mL

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Product Datasheets for TPMPA

Certificate of Analysis / Product Datasheet
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References for TPMPA

References are publications that support the biological activity of the product.

Chebib et al (1998) GABAC receptor antagonists differentiate between human r1 and r2 receptors expressed in Xenopus oocytes. Eur.J.Pharmacol. 357 227 PMID: 9797041

Ragozzino et al (1996) Design and in vitro pharmacology of a selective γ-aminobutyric acidc receptor antagonist. Mol.Pharmacol. 50 1024 PMID: 8863850

Xu et al (2009) The involvement of GABA-C receptors in paired pulse depression of inhibitory postsynaptic currents in rat hippocampal CA1 pyramidal neurons. Exp.Neurol. 216 243 PMID: 19100735

Murata et al (1996) The first selective antagonist for a GABAc receptor. Bioorg.Med.Chem.Lett. 6 2073

If you know of a relevant reference for TPMPA, please let us know.

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Keywords: TPMPA, TPMPA supplier, Selective, GABAC, antagonists, Receptors, GABAA-rho, GABAA-ρ, GABA-A, 1040, Tocris Bioscience

12 Citations for TPMPA

Citations are publications that use Tocris products. Selected citations for TPMPA include:

Murphy-Baum and Taylor (2015) The Synaptic and Morphological Basis of Orientation Selectivity in a Polyaxonal Amacrine Cell of the Rabbit Retina. Vis Neurosci 35 13336 PMID: 26424882

Wood et al (2000) The human GABA(B1b) and GABA(B2) heterodimeric recombinant receptor shows low sensitivity to phaclofen and saclofen. Front Cell Neurosci 131 1050 PMID: 11082110

Elgueta et al (2015) Acetylcholine induces GABA release onto rod bipolar cells through heteromeric nicotinic receptors expressed in A17 amacrine cells. J Neurosci 9 6 PMID: 25709566

Jensen (2013) Effects of a metabotropic glutamate 1 receptor antagonist on light responses of retinal ganglion cells in a rat model of retinitis pigmentosa. PLoS One 8 e79126 PMID: 24205371

Do you know of a great paper that uses TPMPA from Tocris? Please let us know.

Reviews for TPMPA

Average Rating: 5 (Based on 1 Review.)

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Used in inhibitor cocktail.
By Anonymous on 12/03/2019
Assay Type: In Vitro
Species: Rat
Cell Line/Tissue: Retinal rod bipolar cells

Retinal dissections were performed in HEPES-buffered extracellular solution containing inhibitor cocktail50 umol/L

PMID: 30338673
review image

Literature in this Area

Tocris offers the following scientific literature in this area to showcase our products. We invite you to request* your copy today!

*Please note that Tocris will only send literature to established scientific business / institute addresses.

GABA Receptors Scientific Review

GABA Receptors Scientific Review

Written by Ian Martin, Norman Bowery and Susan Dunn, this review provides a history of the GABA receptor, as well as discussing the structure and function of the various subtypes and the clinical potential of receptor modulators; compounds available from Tocris are listed.