3,3',5,5'-Tetramethylbenzidine (TMB) ≥99%, powder
Supplier: MP Biomedicals
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Warning
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3,3',5,5'-Tetramethylbenzidine is suitable as peroxidase substrate for use in ELISA procedures. The substrate produces a soluble end product that is pale blue in color and can be read spectrophotometrically at 370 or 620 to 650 nm. The TMB reaction may be stopped with 2 M H2SO4 (resulting in a yellow color), and read at 450 nm. A sensitive and specific reagent for the detection of blood, assay of hemoglobin, assay of peroxidases. It is useful in gel staining procedure for low levels of home-associated peroxidases and for enzyme immunoassay of horseradish peroxidase.
Soluble in solvents 5%, Ethyl Acetate; insoluble in water. Dissolve 1,5 mg TMB in 0,1 ml of DMSO. Then add 9,9 ml of 0,1 M sodium acetate (pH 6,0). Finally, add hydrogen peroxide to a concentration of 0,01% and filter through a Whatman #1 paper filter. Prepare solutions fresh daily. Discard any remaining solution at the end of the day.
Upozornení: Research Use Only (RUO).
Specification Test Results
Identity Test | Passes |
Purity | ≥99% |
FTIR | Conforms to Standard |
Melting Point | 165 - 170 °C |
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