| Identification | More | [Name]
2-(4-Iodophenyl)-3-(4-nitrophenyl)-5-phenyltetrazolium chloride | [CAS]
146-68-9 | [Synonyms]
2-(4-IODOPHENYL)-3-(4-NITROPHENYL)-5-PHENYL-2H-TETRAZOLIUM CHLORIDE
2-(4'-IODOPHENYL)-3-(4''-NITROPHENYL)-5-PHENYLTETRAZOLIUM CHLORIDE
2-(4-IODOPHENYL)-3-(4-NITROPHENYL)-5-PHENYLTETRAZOLIUM CHLORIDE
2H-TETRAZOLIUM, 2-(4-IODOPHENYL)-3-(4-NITROPHENYL)-5-PHENYL-, CHLORIDE
2-(P-IODOPHENYL)-3-(P-NITROPHENYL)-5-PHENYL-2H-TETRAZOLIUM CHLORIDE
2-(P-IODOPHENYL)-3-(P-NITROPHENYL)-5-PHENYLTETRAZOLIUM CHLORIDE
3-(P-IODOPHENYL)-2-(P-NITROPHENYL)-5-PHENYL TETRAZOLIUM CHLORIDE
4-IODONITROTETRAZOLIUM VIOLET
INT
INT CHLORIDE
INT DYE
IODONITROTETRAZOLIUM
IODONITROTETRAZOLIUM CHLORIDE
IODONITROTETRAZOLIUM VIOLET
P-IODONITROTETRAZOLIUM VIOLET
2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyl-2h-tetrazoliuchloride
INT~2-(4-Iodophenyl)-3-(4-nitrophenyl)-5-phenyltetrazolium chloride hydrate
IntA.R.
INT, Iodonitrotetrazolium violet
2(4-IODOPHENYL)-3(4-NITROPHENYL)-5-PHENYL-2H-Tetrazolium Chloride (INT)extrapure AR | [EINECS(EC#)]
205-676-2 | [Molecular Formula]
C19H13ClIN5O2 | [MDL Number]
MFCD00011961 | [Molecular Weight]
505.7 | [MOL File]
146-68-9.mol |
| Chemical Properties | Back Directory | [Appearance]
slightly yellow powder | [Melting point ]
240 °C (dec.)(lit.) | [storage temp. ]
Store at 2-8 | [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 | [Stability:]
Stable. Incompatible with strong oxidizing agents. | [Water Solubility ]
soluble | [Sensitive ]
Light Sensitive | [λmax]
248nm | [Detection Methods]
Titration | [BRN ]
4093224 | [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 | [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-] | [CAS DataBase Reference]
146-68-9(CAS DataBase Reference) | [Storage Precautions]
Light sensitive;Store under inert gas | [EPA Substance Registry System]
146-68-9(EPA Substance) |
| Safety Data | Back Directory | [Symbol(GHS) ]
 
GHS02,GHS07 | [Signal word ]
Danger | [Hazard statements ]
H228-H335 | [Precautionary statements ]
P210-P240-P241-P261-P271-P280 | [Hazard Codes ]
Xn,F,Xi | [Risk Statements ]
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R68/20/21/22:Harmful: possible risk of irreversible effects through inhalation, in contact with skin and if swallowed .
R36/37/38:Irritating to eyes, respiratory system and skin .
R11:Highly Flammable. | [Safety Statements ]
S36/37:Wear suitable protective clothing and gloves .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S22:Do not breathe dust .
S16:Keep away from sources of ignition-No smoking . | [RIDADR ]
2811 | [WGK Germany ]
3
| [F ]
3-8-10 | [TSCA ]
Yes | [HazardClass ]
6.1 | [PackingGroup ]
III | [HS Code ]
29339900 | [Storage Class]
4.1B - Flammable solid hazardous materials | [Hazard Classifications]
Flam. Sol. 1
STOT SE 2
STOT SE 3 |
| Hazard Information | Back Directory | [Description]
Iodonitrotetrazolium (INT) (chloride) is a monotetrazolium salt used as an indicator dye.1,2 It is reduced to an insoluble formazan that is used as a vital dye or indicator of cellular redox activity.1 Reduction commonly results from the activity of dehydrogenases, although non-enzymatic electron transfer reactions can occur in the presence of an intermediate electron acceptor.1,3 INT is commonly used to measure the respiratory activity of microorganisms in a variety of contexts.1,2 | [Chemical Properties]
slightly yellow powder | [Uses]
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. | [Uses]
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. | [Uses]
Electron acceptor for the colorimetric assay of various dehydrogenases. | [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.
| [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.
| [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.] | [References]
[1] J D GREEN H T N. Assay of succinate dehydrogenase activity by the tetrazolium method: evaluation of an improved technique in skeletal muscle fractions.[J]. Journal of Histochemistry & Cytochemistry, 1980, 28 5: 408-412. DOI: 10.1177/28.5.6966645 |
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