3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) ≥98%, Calbiochem®

Supplier: MilliporeSigma

Synonyms: Thiazolyl blue tetrazolium bromide2-(4,5-Dimethylthiazol-2-yl)-3,5-diphenyl-2H-tetrazol-3-ium bromideMTT

475989-1GM 475989-10GM 475989-10GM 475989-1GM
80108-190EA 755.35 USD
CA80108-192 80108-190 80108-192 CA80108-190
3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) ≥98%, Calbiochem®
3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT)

Membrane-permeable yellow dye that is reduced by mitochondrial reductases in living cells to form the dark blue product, MTT-formazan.


  • Spectrophotometric measurement of MTT-formazan at 540 or 570 nm allows quantitation of cell viability
  • Used as a direct indicator of cytotoxicity (such as for screening cancer drugs) and apoptosis
  • An electron acceptor used for studying NADP-dependent dehydrogenases


Special Instructions: Following reconstitution, aliquot and freeze (–20 °C.). Stock solutions are stable for up to one month at –20 °C.

Formula: C₁₈H₁₆N₅BrS
MW: 414.33 g/mol
Storage Temperature: Ambient
MDL Number: MFCD00011964
CAS Number: 298-93-1

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Specification Test Results

Purity by argentometry ≥98%
Heavy metals ≤0.001%
Sulfated ash ≤0.5%
Form Yellow solid
Cell permeable Y
Toxicity Harmful, Carcinogenic / Teratogenic

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