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300260

Sigma-Aldrich

Diphenyleneiodonium Chloride

≥97% (HPLC), crystalline solid, eNOS inhibitor, Calbiochem®

Synonym(s):

Diphenyleneiodonium Chloride, DPI

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About This Item

Empirical Formula (Hill Notation):
C12H8ClI
CAS Number:
4673-26-1
Molecular Weight:
314.55
MDL number:
MFCD00214165
UNSPSC Code:
12352200
NACRES:
NA.77

product name

Diphenyleneiodonium Chloride, A cell-permeable, irreversible inhibitor of endothelial nitric oxide synthase (eNOS).

Quality Level

100

Assay

≥97% (HPLC)

form

crystalline solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
protect from light

color

off-white

solubility

DMSO: 5 mg/mL

shipped in

ambient

storage temp.

−20°C

InChI

1S/C12H8I.ClH/c1-3-7-11-9(5-1)10-6-2-4-8-12(10)13-11;/h1-8H;1H/q+1;/p-1

InChI key

FCFZKAVCDNTYID-UHFFFAOYSA-M

General description

A cell-permeable, irreversible endothelial nitric oxide synthase inhibitor. Inhibits iNOS in macrophages (IC50 = 5 nM). Shown to inhibit acetylcholine-induced relaxation of preconstricted rat thoracic aortic rings (IC50 = 180 nM). Blocks K+ and Ca2+ currents in arterial smooth muscle cells. Inhibitor of mitochondrial NADH-ubiquinone oxidoreductase. Inhibits other NADH utilizing flavoproteins, such as NADPH oxidase in human neutrophils and macrophages. Causes pressor and tachycardiac effects via indirect activation of the sympathetic nervous system.
A cell-permeable, irreversible inhibitor of endothelial nitric oxide synthase (eNOS). Shown to inhibit acetylcholine-induced relaxation of preconstricted rat thoracic aortic rings (IC50 = 180 nM). Also inhibits iNOS in macrophages (IC50 = 50 nM). Blocks K+ and Ca2+ currents in arterial smooth muscle cells. Inhibitor of mitochondrial NADPH-ubiquinone oxido-reductase.

Biochem/physiol Actions

Cell permeable: yes
Primary Target
eNOS
Product does not compete with ATP.
Reversible: no
Target IC50: 180 nM against endothelial nitric oxide synthase (eNOS)

Warning

Toxicity: Carcinogenic / Teratogenic (D)

Preparation Note

Slight warming is required for complete solubility.

Reconstitution

Following reconstitution aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Other Notes

Wang, Y.X., et al. 1995. Br. J. Pharmacol.114, 194.
Majander, A., et al. 1994. J. Biol. Chem. 269, 21037.
Weir, E.K., et al. 1994. J. Appl. Physiol. 76, 2611.
Wang, Y.X., et al. 1993. Br. J. Pharmacol.110, 1232.
Wang, Y.X., and Pang, C.C. 1993. Br. J. Pharmacol.109, 1186.
Stuehr, D.J., et al. 1991. FASEB J.5, 98.
Handcock, J.T., and Jones, O.T.G. 1987. Biochem. J.242, 103.

Legal Information

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

Storage Class Code

11 - Combustible Solids

WGK

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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Omar Rafael Alemán et al.
Frontiers in immunology, 12, 657393-657393 (2021-06-01)
Human neutrophils express two unique antibody receptors for IgG, the FcγRIIa and the FcγRIIIb. FcγRIIa contains an immunoreceptor tyrosine-based activation motif (ITAM) sequence within its cytoplasmic tail, which is important for initiating signaling. In contrast, FcγRIIIb is a glycosylphosphatidylinositol (GPI)-linked

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