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Key Documents

T3405

Sigma-Aldrich

3,3′,5,5′-Tetramethylbenzidine dihydrochloride

chromogenic, tablet

Synonym(s):

4,4′-Diamino-3,3′,5,5′-tetramethylbiphenyl dihydrochloride

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About This Item

Empirical Formula (Hill Notation):
C16H20N2 · 2HCl
CAS Number:
Molecular Weight:
313.27
EC Number:
MDL number:
UNSPSC Code:
12352204
PubChem Substance ID:
NACRES:
NA.83

Product Name

3,3′,5,5′-Tetramethylbenzidine dihydrochloride, tablet, 1 mg substrate per tablet

form

tablet

mp

≥300 °C

storage temp.

2-8°C

SMILES string

Cl[H].Cl[H].Cc1cc(cc(C)c1N)-c2cc(C)c(N)c(C)c2

InChI

1S/C16H20N2.2ClH/c1-9-5-13(6-10(2)15(9)17)14-7-11(3)16(18)12(4)8-14;;/h5-8H,17-18H2,1-4H3;2*1H

InChI key

NYNRGZULARUZCC-UHFFFAOYSA-N

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Application

3,3′,5,5′-Tetramethylbenzidine (TMB) is a peroxidase substrate suitable 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.
3,3′,5,5′-Tetramethylbenzidine dihydrochloride has been used as a substrate for the
  • anti-mouse IgG (? specific) horseradish peroxidase-conjugated antibody in the ELISA of mice sera
  • anti-mouse peroxidase antibody in the protein tyrosine phosphatase assay of naive and effector T cell lysate
  • in enzymatic hydroperoxide (EH) assay and in prooxidants–antioxidants balance (PAB) assay of serum samples from diabetic patients

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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A novel assay for the evaluation of the prooxidant-antioxidant balance, before and after antioxidant vitamin administration in type II diabetes patients
Alamdari DH, et al.
Clinical Biochemistry, 40(3-4), 248-254 (2007)
Darcy S O Mora et al.
Fish & shellfish immunology, 71, 255-263 (2017-09-04)
An experimental contraceptive vaccine was evaluated in Atlantic salmon (Salmo salar). A peptide derived from the beta subunit of luteinizing hormone (LH) was conjugated to two different carrier proteins, bovine serum albumin (BSA) and keyhole limpet hemocyanin (KLH), and formulated
C Flohr et al.
Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology, 40(1), 131-142 (2009-09-18)
Observational evidence suggests that infection with helminths protects against allergic disease and allergen skin sensitization. It is postulated that such effects are mediated by helminth-induced cytokine responses, in particular IL-10. We tested this hypothesis in a rural area of central
Shurong Tang et al.
Mikrochimica acta, 185(5), 273-273 (2018-05-01)
A hybrid material composed of graphitic carbon nitride (g-C3N4) and platinum nanoparticles (PtNPs) with peroxidase mimicking activity was used to design a rapid, sensitive and low-cost colorimetric method for the determination of Ag(I). The g-C3N4-PtNPs hybrid was synthesized by reduction
CD45 isoform expression is associated with different susceptibilities of human naive and effector CD4+ T cells to respond to IL-4
Stutz A, et al.
European Journal of Immunology, 35(2), 575-583 (2005)

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NBT-BCIP substrate system aids in western blotting and immunohistological staining, producing a blue-purple insoluble end product.

NBT-BCIP substrate system aids in western blotting and immunohistological staining, producing a blue-purple insoluble end product.

NBT-BCIP substrate system aids in western blotting and immunohistological staining, producing a blue-purple insoluble end product.

NBT-BCIP substrate system aids in western blotting and immunohistological staining, producing a blue-purple insoluble end product.

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