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Home > Encyclopedia > 3,3',5,5'-TETRAMETHYLBENZIDINE DIHYDROCHLORIDE HYDRATE

3,3',5,5'-TETRAMETHYLBENZIDINE DIHYDROCHLORIDE HYDRATE

3,3',5,5'-TETRAMETHYLBENZIDINE DIHYDROCHLORIDE HYDRATE structure

3,3',5,5'-TETRAMETHYLBENZIDINE DIHYDROCHLORIDE HYDRATE 

structure
  • CAS No:

    207738-08-7

  • Formula:

    C16H23ClN2O

  • Chemical Name:

    3,3',5,5'-TETRAMETHYLBENZIDINE DIHYDROCHLORIDE HYDRATE

  • Synonyms:

    TMB2HC1 hydrate;TMB*2HCL*2H2O;3,3',5,5'-tetramethylbenzidine·2HCl·2H2O;3,3',5,5'-Tetramethyl-[1,1'-biphenyl]-4,4'-diamine hydrochloride hydrate(1:2:x);3,3',5,5'-tetramethylbiphenyl-4,4'-diamine hydrochloride hydrate;TMB-2HCL-2HO;5'-Tetramethylbenzidine 2HCl 2H20;3,3',5,5'-TETRAMETHYLBENZIDINE DIHYDROCHLORIDE HYDRATE, 98+%

  • Categories:

    Biochemical Engineering  >  Biochemical Reagents

Description

Off-white fluffy powder


TMB is an aromatic amine that undergoes oxidation by the higher oxidation states of heme peroxidases (compounds I and II) thereby serving as a reducing co-substrate. One electron oxidation of TMB results in a radical cation that forms a charge-transfer complex with the unoxidized compound. This charge transfer complex absorbs at 652 nm (ε = 39,000). The completely oxidized form (diimine) absorbs at 450 nm (ε = 59,000) and is formed by two sequential one-electron oxidations of TMB. Thus the stoichiometry of oxidation is 0.5 mole charge transfer complex (λmax= 652 nm) or 1 mole of diimine (λmax= 450 nm) formed (or TMB oxidized) per mole of hydroperoxide reduced by the peroxidase.


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.

3,3',5,5'-TETRAMETHYLBENZIDINE DIHYDROCHLORIDE HYDRATE Basic Attributes

294.82

312.11600

688-511-0

Yes

DTXSID10597911

Light brown to brown

29215900

Characteristics

52.04000

6.51800

>300°C

459.8ºC at 760 mmHg

231.9ºC

soluble in DMSO (~1.7 mg/ml), and 1:300 DMSO:PBS (pH 7.2) (0.03 mg/ml).

2-8ºC

3.01E-09mmHg at 25°C

2-8°C

Safety Information

NONH for all modes of transport

3

22

22-24/25-25-24

22

|Warning|H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]|P201, P202, P261, P264, P270, P271, P280, P281, P301+P312, P302+P352, P304+P312, P304+P340, P308+P313, P312, P322, P330, P363, P405, and P501|The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory.

3,3',5,5'-TETRAMETHYLBENZIDINE DIHYDROCHLORIDE HYDRATE Use and Manufacturing

3,3',5,5'-Tetramethylbenzidine dihydrochloride hydrate is a chromophore substrate in ELISA assays. It is a noncarcinogenic substitute for benzidine.


Convenient water-soluble form of TMB for determination of peroxidase.


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).

Computed Properties

Molecular Weight:349.3
Hydrogen Bond Donor Count:6
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:1
Exact Mass:348.1371335
Monoisotopic Mass:348.1371335
Topological Polar Surface Area:54
Heavy Atom Count:22
Complexity:226
Covalently-Bonded Unit Count:5
Compound Is Canonicalized:Yes

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