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.
This page contains content from the copyrighted Wikipedia article "INT (chemical)"; that content is used under the GNU Free Documentation License (GFDL). You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.