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T8665

Sigma-Aldrich

3,3′,5,5′-Tetramethylbenzidine (TMB) Liquid Substrate System

peroxidase substrate

Synonym(s):

TMB

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About This Item

UNSPSC Code:
12352204
NACRES:
NA.83

Quality Level

300

form

liquid

storage condition

protect from light

shipped in

wet ice

storage temp.

2-8°C

Related Categories

Application

TMB is a substrate for horseradish peroxidase. Forms a soluble blue end product that may be read at 370 nm or 655 nm. The TMB reaction may be stopped with 0.5 M H2SO4, resulting in a yellow color, and read at 450 nm. Recommended for ELISA (microwell) procedures, not recommended for membrane applications.
3,3′,5,5′-Tetramethylbenzidine has been used in a study to demonstrate that by measuring substrate absorption values off the absorption maximum, the measuring range of any immunoenzymometric assay can be extended significantly without jeopardizing assay characteristics. 3,3′,5,5′-Tetramethylbenzidine has also been used in a study to understand the formation of CuS concave superstructures with peroxidase-like activity.

Caution

This substrate is very light-sensitive and should be protected from direct sunlight or UV sources.

Physical form

Ready-to-use.

Other Notes

2024 CiteAb Award Winner for Supplier Succeeding in Parkinson′s Research

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Carc. 1A - Eye Irrit. 2 - Flam. Liq. 3 - STOT SE 1

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

129.9 °F - closed cup

Flash Point(C)

54.4 °C - closed cup

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH Annex XVII (Restriction List)

CAS No.

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Tomasz Brudek et al.
Molecular neurodegeneration, 12(1), 44-44 (2017-06-09)
Parkinson's' disease (PD) and Multiple System Atrophy (MSA) are progressive brain disorders characterized by intracellular accumulations of α-synuclein and nerve cell loss in specific brain areas. This loss causes problems with movement, balance and/or autonomic functions. Naturally occurring autoantibodies (NAbs)
Sui-Yuan Chang et al.
Scientific reports, 11(1), 8692-8692 (2021-04-24)
A metal nanoparticle composite, namely TPNT1, which contains Au-NP (1 ppm), Ag-NP (5 ppm), ZnO-NP (60 ppm) and ClO2 (42.5 ppm) in aqueous solution was prepared and characterized by spectroscopy, transmission electron microscopy, dynamic light scattering analysis and potentiometric titration. Based on the in
Paweł Kozielewicz et al.
Molecular pharmacology, 97(1), 23-34 (2019-11-11)
Smoothened (SMO) is a GPCR that mediates hedgehog signaling. Hedgehog binds the transmembrane protein Patched, which in turn regulates SMO activation. Overactive SMO signaling is oncogenic and is therefore a clinically established drug target. Here we establish a nanoluciferase bioluminescence
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Forensic science international, 280, 25-34 (2017-09-25)
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S Madersbacher et al.
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Articles

Colorimetric Alkaline Phosphatase and Peroxidase Substrate Detection Systems

Nitroblue Tetrazolium (NBT) is used with the alkaline phosphatase substrate 5-Bromo- 4-Chloro-3-Indolyl Phosphate (BCIP) in western blotting and immunohistological staining procedures. These substrate systems produce an insoluble NBT diformazan end product that is blue to purple in color and can be observed visually.

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