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T8768

Sigma-Aldrich

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

powder, ≥98%

Synonym(s):

TMB dihydrochloride

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About This Item

Linear Formula:
[-C6H2(CH3)2-4-NH2]2·2HCl·xH2O
CAS Number:
207738-08-7
Molecular Weight:
313.27 (anhydrous basis)
MDL number:
MFCD00150104
UNSPSC Code:
12352204
PubChem Substance ID:
24900558
NACRES:
NA.83

Quality Level

200

assay

≥98%

form

powder

solubility

acetic acid: water (1:2): 20 mg/mL, clear to slightly hazy

storage temp.

2-8°C

SMILES string

O.Cl.Cl.Cc1cc(cc(C)c1N)-c2cc(C)c(N)c(C)c2

InChI

1S/C16H20N2.2ClH.H2O/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;1H2

InChI key

KVCWTKDFVVSVSJ-UHFFFAOYSA-N

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General description

3,3′,5,5′-Tetramethylbenzidine dihydrochloride hydrate (TMB-d) is a sensitive chromogen substrate for peroxidase. It is non- carcinogenic, hence, it can be used as a safe substitute for benzidine. TMB-d is useful in quantifying hemoglobin and in staining myeloperoxidase-containing granules in granulocytes.

Application

3,3′,5,5′-Tetramethylbenzidine dihydrochloride hydrate has also been used as a horseradish peroxidase substrate in enzyme linked immunosorbent assay and reverse dot blot (RDB).
Noncarcinogenic substitute for benzidine.

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1A

Storage Class

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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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Detection of Antibodies Against DNA Polymerase of Hepatitis B Virus in HBsAg-Positive Sera Using ELISA
Rui LX, et al.
The Korean Journal of Internal Medicine, 13, 95-95 (1998)
Robot Printing of Reverse Dot Blot Arrays for Human Mutation Detection
Lappin S, et al.
The Journal of Molecular Diagnostics : JMD, 3, 178-178 (2001)
Quantitative determination of hemoglobin and cytochemical staining for peroxidase using 3, 3?, 5, 5?-tetramethylbenzidine dihydrochloride, a safe substitute for benzidine
Liem HH, et al.
Analytical biochemistry, 98(2), 388-393 (1979)
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