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Key Documents

554412

Sigma-Aldrich

Tetrodotoxin, Citrate, Fugu sp.

Synonym(s):

TTx

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About This Item

UNSPSC Code:
12352202
NACRES:
NA.51

Assay

≥98%

Quality Level

form

solid

color

white

solubility

H2O: 1 mg/mL

General description

Reversibly blocks Na+ channels, which are essential for the propagation of impulses in excitable membranes. Useful as a marker of Na+ channels in excitable tissues. Inhibits the release of glutamate via Na+-dependent glutamate transporter and prevents veratradine-induced intracellular Ca2+ accumulation (IC50 = 63 nM).
Reversibly blocks Na+ channels, which are essential for the propagation of impulses in excitable membranes. Useful as a marker of Na+ channels in excitable tissues. Inhibits the release of glutamate via Na+-dependent glutamate transporter and prevents veratradine-induced intracellular Ca2+ accumulation (IC50 = 63 nM).

Application

Tetrodotoxin, Fugu sp., CAS 18660-81-6, is a reversible blocker of Na+ channels. Inhibits the release of glutamate via Na+-dependent glutamate transporter.

Biochem/physiol Actions

Target IC50:63 nM Iinhibiting the release of glutamate via Na+-dependent glutamate transporter and prevents veratradine-induced intracellular Ca2+ accumulation

Physical form

Crystalline solid. Contains sodium citrate.

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C. Activity is destroyed if exposed to alkaline or strongly acidic conditions.

Other Notes

Not available for sale outside of the United States.

Pictograms

Skull and crossbones

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 1 Oral

Storage Class Code

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3


Certificates of Analysis (COA)

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M Nakamura et al.
Toxicon : official journal of the International Society on Toxinology, 23(2), 271-276 (1985-01-01)
Analysis of puffer fish tissue extracts by a fluorometric tetrodotoxin analyzer revealed the presence of three tetrodotoxin derivatives besides tetrodotoxin. The derivatives were isolated and identified as tetrodonic acid, 4-epitetrodotoxin and anhydrotetrodotoxin on the basis of mass spectral and 1H
P G Lysko et al.
Stroke, 25(12), 2476-2482 (1994-12-01)
Studies examining the role of tetrodotoxin-sensitive ion channels in hypoxic-ischemic neuronal damage have concluded that sodium influx is an important initiating event. We examined the neuroprotectant effect of tetrodotoxin on both cultured cerebellar neurons and on CA1 hippocampal neurons of

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