Definition: Quaternary salts derived from tetrazoles. They are used in tests to distinguish between reducing sugars and simple aldehydes, for detection of dehydrogenase in tissues, cells, and bacteria, for determination of corticosteroids, and in color photography. (From Mall's Dictionary of Chemistry, 5th ed, p455)
thiazolyl blue [ CIL 102,3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide,3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide,C,N-diphenyl-N'-(4,5-dimethylthiazol-2-yl)tetrazolium bromide,C,N-diphenyl-N-4,5-dimethylthiazol-2-yltetrazolium chloride,CIL-102,MTT tetrazolium,parent of thiazolyl blue,thiazolyl blue tetrazolium bromide ] RN & II refers to bromide