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I8377

Sigma-Aldrich

Iodonitrotetrazolium chloride

Used in colorimetric assays.

Synonym(s):

2-(4-Iodophenyl)-3-(4-nitrophenyl)-5-phenyl-2H-tetrazolium chloride, p-Iodonitrotetrazolium Violet, INT

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About This Item

Empirical Formula (Hill Notation):
C19H13ClIN5O2
CAS Number:
146-68-9
Molecular Weight:
505.70
Beilstein:
4093224
EC Number:
205-676-2
MDL number:
MFCD00011961
UNSPSC Code:
12171500
PubChem Substance ID:
24896138
NACRES:
NA.47

Quality Level

200

Assay

≥98% (TLC)

form

powder

mp

240 °C (dec.) (lit.)

solubility

H2O: 4 mg/mL

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

2-8°C

SMILES string

[Cl-].[O-][N+](=O)c1ccc(cc1)-[n+]2nc(nn2-c3ccc(I)cc3)-c4ccccc4

InChI

1S/C19H13IN5O2.ClH/c20-15-6-8-16(9-7-15)23-21-19(14-4-2-1-3-5-14)22-24(23)17-10-12-18(13-11-17)25(26)27;/h1-13H;1H/q+1;/p-1

InChI key

JORABGDXCIBAFL-UHFFFAOYSA-M

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Application

Iodonitrotetrazolium chloride has been used for the staining of cells. It has been used as a coupling agent in the enzymatic assay of D-arabinitol.
Electron acceptor for the colorimetric assay of various dehydrogenases

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Product No.
Description
Pricing

Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Danger

Hazard Statements

H228,H335

Hazard Classifications

Flam. Sol. 1 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

4.1B - Flammable solid hazardous materials

WGK

WGK 3

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Certificates of Analysis (COA)

Lot/Batch Number
0000284108
0000310220
SLCQ5874
SLCL0301
SLBZ3933

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A sensitive spectrophotometric assay for determining mitochondrial malate dehydrogenase activity is described. The assay measures NADH production by coupling it to the reduction of 2-(p-iodophenyl)-3(p-nitrophenyl)-5-phenyl tetrazolium chloride (INT). Via an intermediate electron carrier, either phenazine methosulfate or lipoamide dehydrogenase, INT
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