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480073

Sigma-Aldrich

Necrosulfonamide

≥95% (HPLC), solid, MLKL inhibitor, Calbiochem®

Synonym(s):

MLKL Inhibitor, Necrosulfonamide, Necrosis Inhibitor III, Mixed Lineage Kinase Domain-Like Protein Inhibitor, Necrosome Inhibitor II, Necrosulfonamide, (E)-N-(4-(N-(3-Methoxypyrazin-2-yl)sulfamoyl)phenyl)-3-(5-nitrothiophene-2-yl)acrylamide

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About This Item

Empirical Formula (Hill Notation):
C18H15N5O6S2
CAS Number:
432531-71-0
Molecular Weight:
461.47
UNSPSC Code:
12352200
NACRES:
NA.77

product name

MLKL Inhibitor, Necrosulfonamide, MLKL Inhibitor, Necrosulfonamide, CAS 432531-71-0, is a cell-permeable inhibitor that covalently modifies Cys88 and blocks human MLKL adaptor function.

Quality Level

100

assay

≥95% (HPLC)

form

solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
protect from light

color

dark yellow

solubility

DMSO: 100 mg/mL

shipped in

ambient

storage temp.

2-8°C

InChI

1S/C18H15N5O6S2/c1-29-18-17(19-10-11-20-18)22-31(27,28)14-6-2-12(3-7-14)21-15(24)8-4-13-5-9-16(30-13)23(25)26/h2-11H,1H3,(H,19,22)(H,21,24)/b8-4+

InChI key

FNPPHVLYVGMZMZ-XBXARRHUSA-N

General description

A cell-permeable acrylamide compound that inhibits human, but not murine, MLKL adaptor function via covalent modification of Cys86 and is more potent than Nec-1 (Cat. No. 480065) in preventing necrotic/necroptotic death in human HT-29 (IC50 = 124 nM and 2 µM, respectively), being ineffective against necrosis/necroptosis in murine L929 or apoptosis in human RIP3-null Panc-1 cells. Unlike Nec-1, which prevents necrosome formation by blocking RIP1-RIP3 interaction, MLKL prevents the MLKL-RIP1-RIP3 necrosome complex from interacting with further downstream effectors.
A cell-permeable acrylamide compound that inhibits human, but not murine, MLKL adaptor function via covalent modification of Cys86 through Michael addition and is more potent than the RIP1 inhibitor Nec-1 (Cat. No. 480065) in preventing necrotic/necroptotic death in human HT-29 (IC50 = 124 nM and 2 µM with respective drug against 20 ng/mL TNF-&alpha/100 nM Smac mimetic/20 µM Z-VAD-induced death) and FADD-null Jurkat cultures (80% protection against 200 ng/mL TNF-&alpha-induced death by 0.5 µM NSA or 10 µM Nec-1), being ineffective against blocking necrosis/necroptosis in murine L929 or apoptosis in human RIP3-null Panc-1 cells even at concentrations as high as 5 µM. Unlike Nec-1, which prevents necrosome formation by blocking RIP1-RIP3 interaction, MLKL prevents the MLKL-RIP1-RIP3 necrosome complex from interacting with further downstream effectors.

Biochem/physiol Actions

Cell permeable: yes
Primary Target
human MLKL
Reversible: no

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Reconstitution

Use only fresh DMSO for reconstitution.

Other Notes

Dunai, Z.A., et al. 2012. PLoS One7, e41945.
Sun, L., et al. 2012. Cell 148, 213.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Jialin Dai et al.
Cell death & disease, 11(4), 282-282 (2020-04-26)
Mixed-lineage kinase domain-like protein (MLKL) is known as the terminal executor of necroptosis. However, its function outside of necroptosis is still not clear. Herein, we demonstrate that MLKL promotes vascular inflammation by regulating the expression of adhesion molecules ICAM1, VCAM1
Andre L Samson et al.
Nature communications, 11(1), 3151-3151 (2020-06-21)
Mixed lineage kinase domain-like (MLKL) is the terminal protein in the pro-inflammatory necroptotic cell death program. RIPK3-mediated phosphorylation is thought to initiate MLKL oligomerization, membrane translocation and membrane disruption, although the precise choreography of events is incompletely understood. Here, we

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