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SML2333

Sigma-Aldrich

VU0463271

≥98% (HPLC)

Synonym(s):

N-Cyclopropyl-N-(4-methyl-2-thiazolyl)-2-[(6-phenyl-3-pyridazinyl)thio]-acetamide, N-Cyclopropyl-N-(4-methyl-2-thiazolyl)-2-[(6-phenyl-3-pyridazinyl)thio]acetamide, N-Cyclopropyl-N-(4-methylthiazol-2-yl)-2-(6-phenylpyridazin-3-ylthio)acetamide

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About This Item

Empirical Formula (Hill Notation):
C19H18N4OS2
CAS Number:
1391737-01-1
Molecular Weight:
382.50
MDL number:
MFCD30182240
UNSPSC Code:
12352200

Assay

≥98% (HPLC)

form

powder

color

off-white to blue-gray

solubility

DMSO: 2 mg/mL, clear

storage temp.

2-8°C

InChI

1S/C19H18N4OS2/c1-13-11-26-19(20-13)23(15-7-8-15)18(24)12-25-17-10-9-16(21-22-17)14-5-3-2-4-6-14/h2-6,9-11,15H,7-8,12H2,1H3

InChI key

DPONSKCACOZTGN-UHFFFAOYSA-N

Biochem/physiol Actions

VU0463271 is a potent and selective potassium-chloride cotransporter 2 (KCC2) inhibitor that displays greatly enhanced potency than its structural analogs VU0255011 (ML077) & VU0240511 (IC50 = 61, 537, and 568 nM, respectively). VU0463271 exhibits much reduced efficacy against the related Na-K-2Cl cotransporter 1 (NKCC1 inhibition max ~37% at 100 μM) and little affinity toward a panel of 68 GPCRs, ion channels, and transporters. Although VU0463271 is reported to exhibit affinity toward mitochondrial translocator protein TSPO (IC50 of 204 nM against PK11195 binding; rat heart) and inhibitory potency against α1B adrenergic receptor (IC50 of 364.7 nM; human α1B CHO transfectants), these proteins are not known to affect chloride homeostasis.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Peter M Klein et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 38(5), 1232-1248 (2017-12-24)
Maintenance of a low intracellular Cl- concentration ([Cl-]i) is critical for enabling inhibitory neuronal responses to GABAA receptor-mediated signaling. Cl- transporters, including KCC2, and extracellular impermeant anions ([A]o) of the extracellular matrix are both proposed to be important regulators of
Hannah Alfonsa et al.
Nature communications, 7, 13495-13495 (2016-11-18)
Chloride regulation affects brain function in many ways, for instance, by dictating the GABAergic reversal potential, and thereby influencing neuronal excitability and spike timing. Consistent with this, there is increasing evidence implicating chloride in a range of neurological conditions. Investigations
Eric Delpire et al.
Bioorganic & medicinal chemistry letters, 22(14), 4532-4535 (2012-06-26)
Further chemical optimization of the MLSCN/MLPCN probe ML077 (KCC2 IC(50)=537 nM) proved to be challenging as the effort was characterized by steep SAR. However, a multi-dimensional iterative parallel synthesis approach proved productive. Herein we report the discovery and SAR of
Matthew R Kelley et al.
Neuropharmacology, 108, 103-110 (2016-04-26)
Impaired neuronal inhibition has long been associated with the increased probability of seizure occurrence and heightened seizure severity. Fast synaptic inhibition in the brain is primarily mediated by the type A γ-aminobutyric acid receptors (GABAARs), ligand-gated ion channels that can
Iason Keramidis et al.
Brain : a journal of neurology, 146(12), 4903-4915 (2023-08-08)
Disinhibition during early stages of Alzheimer's disease is postulated to cause network dysfunction and hyperexcitability leading to cognitive deficits. However, the underlying molecular mechanism remains unknown. Here we show that, in mouse lines carrying Alzheimer's disease-related mutations, a loss of
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