Skip to Content
Merck
All Photos(3)

Key Documents

View All Documentation

D9154

Sigma-Aldrich

o-Dianisidine dihydrochloride

tablet

Synonym(s):

3,3′-Dimethoxybenzidine dihydrochloride, Fast Blue B

Sign Into View Organizational & Contract Pricing
All Photos(3)

About This Item

Empirical Formula (Hill Notation):
C14H16N2O2 · 2HCl
CAS Number:
20325-40-0
Molecular Weight:
317.21
Beilstein:
3917996
EC Number:
243-737-5
MDL number:
MFCD00012488
UNSPSC Code:
12352204
PubChem Substance ID:
24894263
NACRES:
NA.83

product name

o-Dianisidine dihydrochloride, tablet, 10 mg substrate per tablet

form

tablet

solubility

water: 1 tablet/10 mL, clear, colorless

storage temp.

2-8°C

SMILES string

Cl.Cl.COc1cc(ccc1N)-c2ccc(N)c(OC)c2

InChI

1S/C14H16N2O2.2ClH/c1-17-13-7-9(3-5-11(13)15)10-4-6-12(16)14(8-10)18-2;;/h3-8H,15-16H2,1-2H3;2*1H

InChI key

UXTIAFYTYOEQHV-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Specificity

o-Dianisidine (3,3′-dimethoxybenzidine) is a peroxidase substrate suitable for use in ELISA procedures. This substrate produces a soluble end product that is yellow-orange in color and can be read spectrophotometrically at 405 nm. The reaction may be stopped with 5 M HCl.

Warning

Probably carcinogenic.

Reconstitution

Dissolve one tablet in 60 ml of 50 mM phosphate-citrate buffer, pH 5.0. Add 12 μl of fresh 30% hydrogen peroxide immediately before to use.

Signal Word

Danger

Hazard Statements

H302,H314,H350

Hazard Classifications

Acute Tox. 4 Oral - Carc. 1B - Eye Dam. 1 - Skin Corr. 1

Storage Class Code

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

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Rémy Ricoux et al.
Bioconjugate chemistry, 19(4), 899-910 (2008-03-08)
To develop artificial hemoproteins that could lead to new selective oxidation biocatalysts, a strategy based on the insertion of various iron-porphyrin cofactors into Xylanase A (Xln10A) was chosen. This protein has a globally positive charge and a wide enough active
Cathrine Nordgaard et al.
International journal of molecular sciences, 22(17) (2021-09-11)
p38 and c-Jun N-terninal kinase (JNK) are activated in response to acute stress and inflammatory signals. Through modification of a plethora of substrates, these kinases profoundly re-shape cellular physiology for the optimal response to a harmful environment and/or an inflammatory
Uta Merle et al.
Journal of hepatology, 51(5), 925-930 (2009-09-02)
A low serum ceruloplasmin concentration is considered diagnostic for Wilson's disease. We aimed to evaluate an enzymatic test for ceruloplasmin oxidase activity and to compare it with the routinely used immunological ceruloplasmin measurement. Serum ceruloplasmin was measured enzymatically with o-dianisidine
Iain S MacPherson et al.
Protein engineering, design & selection : PEDS, 23(3), 137-145 (2010-01-20)
Directed evolution methods were developed for Cu-containing nitrite reductase (NiR) from Alcaligenes faecalis S-6. The PCR cloning strategy allows for the efficient production of libraries of 100 000 clones by a modification of a megaprimer-based whole-plasmid synthesis reaction. The high-throughput
Lori Hartnett et al.
The International journal of developmental biology, 54(4), 573-583 (2009-09-17)
The insulin-like growth factor (IGF) family is essential for normal embryonic growth and development and it is highly conserved through vertebrate evolution. However, the roles that the individual members of the IGF family play in embryonic development have not been
View All Related Papers

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.

Protocols

Enzymatic Assay of Diamine Oxidase (E.C. No. 1.4.3.22)

To standardize a procedure for the enzymatic assay of Diamine Oxidase.

Enzymatic Assay of Glucose Oxidase

Enzymatic Assay of Glucose Oxidase

Enzymatic Assay of Cholesterol Oxidase

This procedure applies to products that have a specification for the enzymatic activity of cholesterol oxidase. This assay is NOT to be used to assay Cholesterol Oxidase from Schizophyllum commune (Discontinued Product Number C7274) and from Brevibacterium sp. (Discontinued Product Number C8153).

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service