PRAX-562 (PRAX562) is a novel persistent sodium current (INa) inhibitor, inhibits hNaV1.6 persistent INa induced by ATX-II or SCN8A mutation N1768D with IC50 of 141 and 75 nM, respectively.PRAX-562 displays similar potency for inhibition of persistent INa expressed by other human NaV isoforms (hNaV1.1, hNaV1.2, hNaV1.5) as well as rat, dog, and mouse orthologs (rNaV1.2, dNaV1.2, mNaV1.6, rNaV1.6), with IC50 values ranging 109-180 nM.PRAX-562 exhibits tonic block with lower potency (IC50=8470 nM), demonstrating 60-fold preference for persistent INa, also exhibits preference for persistent INa over peak INa tonic block for hNaV1.1 (173-fold).PRAX-562 reduces intrinsic excitability of hippocampal CA1 pyramidal neurons without compromising action potential (AP) amplitude.PRAX-562 (3 mg/kg, po) produces dose-dependent protection (increase in latency) of mice against MES-induced tonic hindlimb seizures (EC50=90.1 ng/ml), with complete protection at 10 mg/kg.

PF-06526290 is a potent, selective Nav1.3 inhibitor with IC50 of 5.1 uM, interact with the Domain 4 voltage sensor domain (D4 VSD and shows no activity for Nav1.7.

NaV1.7 inhibitor 51 is a highly potent, selective, orally active NaV1.7 inhibitor with IC50 of 10.7 nM in FLIPR membrane potential assay, no significant activity against NaV1.5 (IC50>10 uM).NaV1.7 inhibitor 51 shows good selectivity against other NaV isoforms and minimal inhibition at 10 uM for the resting state across different NaV isoforms.NaV1.7 inhibitor 51 exhibits state-dependent block of human, monkey, and mouse NaV1.7 with a similar potency range.NaV1.7 inhibitor 51 shows significant effects on the CCI-induced neuropathic pain model.

DA-0218 (DA0218) is a novel potent, selective Nav1.7 inhibitor, inhibits sodium currents in Nav1.7-expressing human embryonic kidney 293 cells with IC50 of 0.74 uM.DA-0218 has no effect on sodium currents in Nav1.5-transfected human embryonic kidney 293 cells in patch-clamp experiments.DA-0218 shows analgesic activity predominantly in phase II in formalin-induced inflammatory pain mouse model.DA-0218 produced acute reduction in paclitaxel-induced mechanical allodynia, and inhibited histamine-induced acute itch and lymphoma-induced chronic itch.

BI-8668 (BI 8668) is a highly potent and selective epithelial sodium channel (ENaC) inhibitor, inhibits Na+ current with IC50 of 17 nM (Ussing chamber assay); BI-8668 inhibits ENaC-mediated water permeability through cell monolayers of the cell line M-1 (M-1 cells: mouse kidney tubules cells) with 81% inhibition at 3 uM.

ASIC1a inhibitor 5b is a highly selective and potent ASIC1a inhibitor, inhibits proton-evoked ASIC1a currents with an apparent IC50 of 27 nM at pH 6.7.ASIC1a inhibitor 5b can potently and selectively inhibit acid-induced activation of ASIC1a-containing channels, including both ASIC1a homotrimers and ASIC1a-ASIC2 heterotrimers, in a pH-dependent manner.ASIC1a inhibitor 5b binds to the acidic pocket of ASIC1a, exhibits a dramatic leftward shift under pH 6.7 activation of ASIC1a as compared to pH 6.0.ASIC1a inhibitor 5b protected neurons from ASIC1a-dependent cell death and is blood-brain barrier permeable.ASIC1a inhibitor 5b (5 mg/kg) attenuated neurological impairment and alleviated infarct volume in mouse MCAO model of ischemic stroke.

SAR340835 (SAR 340835, SAR296968 prodrug) is a potent, selective Na+/Ca2+ exchanger (NCX) inhibitor, a water-soluble prodrug of SAR296968.

SAR296968 (SAR 296968) is a potent, selective Na+/Ca2+ exchanger (NCX) inhibitor, potently inhibits hNCX1/2/3 with IC50 of 74/23/129 nM, respectively.SAR296968 showed the same range of inhibitory potency on NCX1 orthologs from dog, guinea pig, pig, rabbit, and rat (IC50=20-200 nM).SAR296968 inhibited both the forward and reverse mode of the NCX current in a concentration-dependent manner with similarly high potency in voltage-clamp studies in guinea pig cardiomyocytes.SAR296968 displays little to no effect against 5-HT2B, benzodiazepine peripheral receptor, norepinephrine uptake, dopamine uptake, AR and PR.SAR296968 exhibited antiarrhythmic properties in animal models of arrhythmias related to early or late afterdepolarizations, significantly increased left ventricular contractility in anesthetized pigs.

Neurounina-1 is a small molecule Na+/Ca2+ exchanger (NCX) activator, stimulates NCX1 and NCX2 activities with EC50 of 1.1-2.7 nM, does not affect NCX3 activity.Neurounina-1 (10 nM) reduced cell death of primary cortical neurons exposed to oxygen-glucose deprivation followed by reoxygenation, also reduced γ-aminobutyric acid (GABA) release, enhanced GABA(A) currents, and inhibited both glutamate release and N-methyl-d-aspartate receptors in vitro.Neurounina-1 effectively protects against stroke damage in vivo.

NS383 is a potent and uniquely selective inhibitor of rat ASICs containing 1a and/or 3 subunits. NS383 inhibits H(+)-activated currents recorded from rat homomeric ASIC1a, ASIC3, and heteromeric ASIC1a+3 with IC50 values ranging from 0.61 to 2.2 μM. NS383 is well tolerated and capable of reversing pathological painlike behaviors, presumably via peripheral actions, but possibly also via actions within central pain circuits.

Nav1.8-IN-1 (Compound 31) is a potent inhibitor of Na(v)1.8 sodium channel. Nav1.8-IN-1 has the potential for the research of inflammatory and neuropathic pain.

S3969 is a potent and reversible activator of the human epithelial sodium channel (hENaC). The apparent EC50 for S3969 activation of hENaC is 1.2 μm.

S-Bioallethrin is a pyrethroid insecticide. S-Bioallethrin disrupts nerve function by modifying the gating kinetics of transitions between the conducting and nonconducting states of voltage-gated sodium channels.

Bliretrigine is a sodium channel blocker. Bliretrigine has the effect of relieving pain.

GS967 is a novel, potent, and selective inhibitor of cardiac late sodium current(late INa).

Flecainide(Tambocor) is a class 1C antiarrhythmic drug especially used for the management of supraventricular arrhythmia; works by blocking the Nav1.5 sodium channel in the heart, causing prolongation of the cardiac action potential.

Mexiletine hydrochloride is a non-selective voltage-gated sodium channel blocker; Class IB anti-arrhythmic compound.

TC-N 1752 is a potent and orally active inhibitor of Nav1.7, with IC50s of 0.17 μM, 0.3 μM, 0.4 μM, 1.1 μM and 2.2 μM at hNav1.7, hNav1.3, hNav1.4, hNaV1.5 and rNav1.8, respectively. TC-N 1752 also inhibits tetrodotoxin-sensitive sodium channels. TC-N 1752 shows analgesic efficacy in the Formalin model of pain.

Idrevloride, an epithelial sodium channel (ENaC) inhibitor (WO2016133967), can be used for the research of skin disorders.

NHE3-IN-2 is a Na+/H+ exchanger-3 (NHE3) inhibitor ( patent WO2001079186A1, example 6-Chlor-4-phenyl-2-chinazolinyl-guanidin).

Mambalgin 1 TFA is a selective ASIC1a inhibitor (IC50 values are 192 and 72 nM for human ASIC1a and ASIC1a/1b dimer, respectively). Mambalgin 1 TFA binds to closed/inactive channel. Mambalgin 1 TFA is selective for ASIC1a over ASIC2a, ASIC3, TRPV1, P2X2, 5-HT3, Nav1.8, Cav3.2 and Kv1.2 channels. Mambalgin 1 TFA increases latency of withdrawal response in mouse tail-flick and paw-flick tests.

Propafenone D5 (SA-79 D5) hydrochloride is the deuterium labeled Propafenone hydrochloride. Propafenone (SA-79) hydrochloride is a class of anti-arrhythmic medication, which treats illnesses associated with rapid heart beats such as atrial and ventricular arrhythmias.

Phrixotoxin 3 TFA is a potent blocker of voltage-gated sodium channels, with IC50s of 0.6, 42, 72, 288, 610 nM for NaV1.2, NaV1.3, NaV1.4, NaV1.1 and NaV1.5, respectively. Phrixotoxin 3 TFA modulates voltage-gated sodium channels with properties similar to those of typical gating-modifier toxins, both by causing a depolarizing shift in gating kinetics and by blocking the inward component of the sodium current.

GX-201 is a selective NaV1.7 inhibitor, with an IC50 of <3.2 nM for hNaV1.7.

Nav1.7-IN-8 is a potent blockage of NaV1.7 with high selectivity for the inhibition of NaV1.7 over the subtypes hNaV1.1 and hNaV1.5. Nav1.7-IN-8 inhibits CYP2C9 and CYP3A4 with an IC50 of 0.17 μM and 0.077 μM, respectively. Nav1.7-IN-8 displays significant analgesic effects in rodent models of acute and inflammatory pain.

GDC-0310 is a selective acyl-sulfonamide Nav1.7 inhibitor, with an IC50 of 0.6 nM for hNav1.7.

6-Benzoylheteratisine is a naturally occurring antagonist of the Na+ channel activator aconitine.

PF-04885614 is a potent NaV1.8 inhibitor, extracted from patent US2018328915. PF-04885614 has potential for neurological and neurodevelopmental diseases treatment.

ProTx II is a selective blocker of Nav1.7 sodium channels with an IC50 of 0.3 nM, and is at least 100-fold selective for Nav1.7 over other sodium channel subtypes. ProTx-II inhibits sodium channels by decreasing channel conductance and shifting activation to more positive potentials and blocks action potential propagation in nociceptors.

Mambalgin 1 is a selective ASIC1a inhibitor (IC50 values are 192 and 72 nM for human ASIC1a and ASIC1a/1b dimer, respectively). Mambalgin 1 binds to closed/inactive channel. Mambalgin 1 is selective for ASIC1a over ASIC2a, ASIC3, TRPV1, P2X2, 5-HT3, Nav1.8, Cav3.2 and Kv1.2 channels. Mambalgin 1 increases latency of withdrawal response in mouse tail-flick and paw-flick tests.