QX 314 chloride

(HB1030)
Technical documents: SDS CoA Datasheet
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Product overview

Name QX 314 chloride
Alternative names N-Ethyllidocaine chloride
Purity >98%
Description Membrane impermeable Na+ channel blocker
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Images

Figure 1. QX314 inhibition of action potentials in rat CA1 pyramidal neurones during dendritic plateau potentials

QX314 is a membrane impermeable Na+ channel blocker commonly used to inhibit action potential formation. QX314 from Hello Bio inhibits the ability for action potentials to generate in two different cells during dendritic plateau potentials at 1 mM. For protocol see #Protocol 1 in application notes below.
QX 314 chloride: Scientist Approved
QX 314 chloride product vial image | Hello Bio

Biological Data

Biological description

Membrane impermeable Na+ channel blocker. A quaternary derivative of lidocaine. Displays anesthetic properties. Active in vivo. QX 314 bromide also available.

Application notes

#Figure 1: QX 314 inhibition of action potentials in rat CA1 pyramidal neurones during dendritic plateau potentials

QX 314 is a membrane impermeable Na+ channel blocker commonly used to inhibit action potential formation. QX 314 from Hello Bio inhibits the ability for action potentials to generate in two different cells during dendritic plateau potentials at 1mM (see Fig 1 above).

 

#Protocol 1: Evoked plateau potentials in rat CA1 pyramidal neurones

 

  • Pyramidal neurones from adult Wistar rats were patched in CA1 using a KMeSO4 internal solution with and without the addition of 1mM QX 314 (HB1030).
  • Cells were first held in Vclamp at -70mV for 10 minutes to wash out LTP before being transferred to Iclamp (again at -70mV) where they were stimulated at a high stimulation intensity to generate plateau potentials.
  • Stimulation consisted of one single stimulation followed 400ms later by 5 stimulations at 100Hz.
  • Experiments took place in the presence of the GABAB antagonist GCP-55845 (1μM, HB0960) and 50µM PTX.
  • Throughout the experiment input current was adjusted to maintain the cell at -70mV ± 0.5mV.
  • Data is shown from two separate cells.

Solubility & Handling

Storage instructions Room temperature
Solubility overview Soluble in water (100mM)
Important This product is for RESEARCH USE ONLY and is not intended for therapeutic or diagnostic use. Not for human or veterinary use.

Calculators

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Dilution

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Chemical Data

Purity >98%
Chemical name N-(2,6-Dimethylphenylcarbamoylmethyl)triethylammonium chloride
Molecular Weight 298.85
Chemical structure QX 314 chloride  [1265634] Chemical Structure
Molecular Formula C16H27N2OCl
CAS Number 5369-03-9
PubChem identifier 21462
SMILES CC[N+](CC)(CC)CC(=O)NC1=C(C=CC=C1C)C.[Cl-]
Source Synthetic
InChi InChI=1S/C16H26N2O.ClH/c1-6-18(7-2,8-3)12-15(19)17-16-13(4)10-9-11-14(16)5;/h9-11H,6-8,12H2,1-5H3;1H
InChiKey LLPPOMUAOGMYQI-UHFFFAOYSA-N
MDL number MFCD01669894
Appearance White solid

References for QX 314 chloride

References are publications that support the biological activity of the product
  • Intracellular QX-314 inhibits calcium currents in hippocampal CA1 pyramidal neurons.

    Talbot MJ et al (1996) J Neurophysiol 76(3) : 2120-4.
  • Fast sodium action potentials are generated in the distal apical dendrites of rat hippocampal CA1 pyramidal cells.

    Colling SB et al (1994) Neurosci Lett 172(1-2) : 73-96.

2 Item(s)

Publications
These publications cite the use of QX 314 chloride purchased from Hello Bio:
  • Synaptic inhibition in the lateral habenula shapes reward anticipation

    Mameli et al (2021) bioRxiv . : https://doi.org/10.1101/2021.01.
  • Investigating dichotomous projections from ventral hippocampus to prefrontal cortex

    Sanchez Bellot et al (2020) UCL : Thesis
  • The Probability of Neurotransmitter Release Governs AMPA Receptor Trafficking via Activity-Dependent Regulation of mGluR1 Surface Expression.

    Sanderson et al (2018) Cell Rep. 25(13) : 3631-3646
    PubMedID: 30590038
  • Limiting habenular hyperactivity ameliorates maternal separation-driven depressive-like symptoms.

    Tchenio et al (2017) Nat Commun 8(1) : 1135
    PubMedID: 29074844
  • mGluR-LTD at Excitatory and Inhibitory Synapses in the Lateral Habenula Tunes Neuronal Output.

    Valentinova and Mameli (2016) Cell Rep 16(9) : 2298-307
    PubMedID: 27545888

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