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HomeProduct name listIodonitrotetrazolium chloride

Iodonitrotetrazolium chloride

Synonym(s):p-Iodonitrotetrazolium Violet;2-(4-Iodophenyl)-3-(4-nitrophenyl)-5-phenyl-2H-tetrazolium chloride;INT

  • CAS NO.:146-68-9
  • Empirical Formula: C19H13ClIN5O2
  • Molecular Weight: 505.7
  • MDL number: MFCD00011961
  • EINECS: 205-676-2
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-11-19 23:02:33
Iodonitrotetrazolium chloride Structural

What is Iodonitrotetrazolium chloride?

Description

Iodonitrotetrazolium (INT) (chloride) is a monotetrazolium salt used as an indicator dye. It is reduced to an insoluble formazan that is used as a vital dye or indicator of cellular redox activity. Reduction commonly results from the activity of dehydrogenases, although non-enzymatic electron transfer reactions can occur in the presence of an intermediate electron acceptor. INT is commonly used to measure the respiratory activity of microorganisms in a variety of contexts.

Chemical properties

slightly yellow powder

The Uses of Iodonitrotetrazolium chloride

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.

The Uses of Iodonitrotetrazolium chloride

Electron acceptor for the colorimetric assay of various dehydrogenases.

The Uses of Iodonitrotetrazolium chloride

Iodonitrotetrazolium chloride (INT) on reduction gets converted to iodonitrotetrazolium formazan, a water insoluble violet colored dye or indicator. Hence INT can be used for the colorimetric assay of various dehydrogenases.

What are the applications of Application

Iodonitrotetrazolium chloride is an electron acceptor that forms a formazan dye on reduction; measures dehydrogenase activity

Definition

ChEBI: An organic chloride salt having iodonitrotetrazolium as the counterion.

Safety

Iodonitrotetrazolium chloride could cause skin irritation, serious eye irritation, and may cause respiratory irritation.

Purification Methods

Recrystallise the chloride from H2O, aqueous EtOH or EtOH/Et2O. Alternatively, dissolve it in the minimum volume of EtOH and add Et2O; or dissolve it in hot H2O (charcoal), filter and precipitate it by adding conc HCl. Filter the solid off and dry it at 100o. Its solubility in H2O at 25o is 0.5%, and in hot MeOH/H2O (1:1) it is 5%. [Fox & Atkinson J Am Chem Soc 72 3629 1950, Beilstein 26 III/IV 1776.]

Properties and Applications

INT (Iodonitrotetrazolium chloride), similar to tetrazolium chloride on reduction, produces a red formazan dye that can be used for quantitative redox assays. It is also toxic to prokaryotes.INT is an artificial electron acceptor that can be utilized in a colorimetric assay to determine protein concentration in a solution. It can be reduced by succinate dehydrogenase to furazan, the formation of which can be measured by absorbance at 490 nm. The activity of succinate dehydrogenase is readily observed by the naked eye as the solution turns from colorless to rusty red.

Properties of Iodonitrotetrazolium chloride

Melting point: 240 °C (dec.)(lit.)
storage temp.  2-8°C
solubility  methanol: water (1:1): 50 mg/mL hot, very faintly turbid, very deep yellow
form  Powder, Crystals and/or Chunks
color  White to off-white
Water Solubility  soluble
Sensitive  Light Sensitive
λmax 248nm
BRN  4093224
Stability: Stable. Incompatible with strong oxidizing agents.
Biological Applications Bacterial vaginosis diagnosis assay; dehydrogenase enzyme assay; diagnostic assay; food and beverage analytes assays; microbial growth assay; detecting bacteria,yeast,fungi,gamma-hydroxybutyric acid (GHB),microbial growth; measuring niacin,bacterial respiratory activity,superoxide dismutase;treating cancer
InChI 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
CAS DataBase Reference 146-68-9(CAS DataBase Reference)
EPA Substance Registry System 2H-Tetrazolium, 2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyl-, chloride (146-68-9)

Safety information for Iodonitrotetrazolium chloride

Signal word Danger
Pictogram(s)
ghs
Flame
Flammables
GHS02
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H228:Flammable solids
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P240:Ground/bond container and receiving equipment.
P241:Use explosion-proof electrical/ventilating/lighting/…/equipment.
P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P271:Use only outdoors or in a well-ventilated area.
P280:Wear protective gloves/protective clothing/eye protection/face protection.

Computed Descriptors for Iodonitrotetrazolium chloride

InChIKey JORABGDXCIBAFL-UHFFFAOYSA-M
SMILES [N+]1(=NC(C2C=CC=CC=2)=NN1C1C=CC(I)=CC=1)C1=CC=C([N+]([O-])=O)C=C1.[Cl-]

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