3,3',5,5'-Tetramethylbenzidine (TMB) stabilized horseradish peroxidase (HRP) substrate

Supplier: Promega Corporation

Synonyms: TMB3,3',5,5'-Tetramethyl-[1,1'-biphenyl]-4,4'-diamine

W4121
PAW4121EA 165.54 USD
PAW4121
3,3',5,5'-Tetramethylbenzidine (TMB) stabilized horseradish peroxidase (HRP) substrate
3,3',5,5'-Tetramethylbenzidine (TMB)

Stable, ready-to-use color development substrate for localization of horseradish peroxidase-conjugated antibodies on dot blots and Western blots.


  • Premixed and ready to use
  • Stable at room temperature for 12 months
  • More sensitive and color-stable than 4-chloro-1-naphthol


TMB Stabilized Substrate is a stable, ready-to-use TMB (3,3', 5,5'-tetramethylbenzidine) color development substrate for localization of horseradish peroxidase-conjugated antibodies on dot blots and Western blots. It is easier to use than 4-chloro-1-naphthol (CN), which must be prepared immediately before use. TMB Stabilized Substrate comes premixed and fully diluted in a proprietary buffer containing less than 0.5% organic solvent.


This substrate comes premixed and fully diluted in a proprietary buffer containing less than 0.5% organic solvent.


Caution: Not recommended for use with ELISAs.

Formula: C₁₆H₂₀N₂
MW: 240.35 g/mol
MDL Number: MFCD00007748
CAS Number: 54827-17-7

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