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3,3′,5,5′-Tetramethylbenzidine (TMB) is a sensitive and specific reagent for the detection of blood, assay of hemoglobin, and assay of peroxidases. 3,3′,5,5′-Tetramethylbenzidine is a noncarcinogenic substitute (Ames test negative) for benzidine 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 620-650 nm. The TMB reaction may be stopped with 2 M H2SO4 (resulting in a yellow color), and read at 450 nm.
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
3,3′,5,5′-Tetramethylbenzidine, 500 mg | sc-208442 | 500 mg | $37.00 | |||
| US: (Out of Stock: Availability April 2, 2026) | ||||||
3,3′,5,5′-Tetramethylbenzidine, 1 g | sc-208442A | 1 g | $53.00 | |||
3,3′,5,5′-Tetramethylbenzidine, 5 g | sc-208442B | 5 g | $171.00 | |||
3,3′,5,5′-Tetramethylbenzidine, 25 g | sc-208442C | 25 g | $515.00 | |||
3,3′,5,5′-Tetramethylbenzidine, 100 g | sc-208442D | 100 g | $916.00 | |||
3,3′,5,5′-Tetramethylbenzidine, 250 g | sc-208442E | 250 g | $2271.00 | |||