INT (chemical)

INT

Names
IUPAC name 3-(4-Iodophenyl)-2-(4-nitrophenyl)-5-phenyl-2H-tetrazol-3-ium chloride
Other names 2-(4-Iodophenyl)-3-(4-nitrophenyl)-5-phenyltetrazolium chloride
Identifiers
CAS Number	146-68-9
3D model (JSmol)	Interactive image
ChemSpider	58482
ECHA InfoCard	100.005.161
PubChem CID	629284
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 Key: JORABGDXCIBAFL-UHFFFAOYSA-M
SMILES [Cl-].[O-][N+](=O)c1ccc(cc1)n3nc(n[n+]3c2ccc(I)cc2)c4ccccc4
Properties
Chemical formula	C19H13ClIN5O2
Molar mass	505.70 g·mol−1
Melting point	240 °C (464 °F; 513 K) (decomposes)
Solubility in methanol: water (1:1)	50 mg/mL hot, very faintly turbid, very deep yellow
log P	−2.4
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

INT or 2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyl-2H-tetrazolium is a popularly used tetrazolium salt (usually chloride), similar to tetrazolium chloride that on reduction produces a red formazan dye that can be used for quantitative redox assays.