202088

Sigma-Aldrich

Chromotrope 2R

Dye content 75 %

Synonym(s):
2-(Phenylazo)chromotropic acid disodium salt, Acid Red 29
Empirical Formula (Hill Notation):
C16H10N2Na2O8S2
CAS Number:
Molecular Weight:
468.37
Colour Index Number:
16570
EC Number:
MDL number:
PubChem Substance ID:

composition

Dye content, 75%

λmax

510 nm
530 nm (2nd)

SMILES string

[Na+].[Na+].Oc1cc(cc2cc(c(\N=N\c3ccccc3)c(O)c12)S([O-])(=O)=O)S([O-])(=O)=O

InChI

1S/C16H12N2O8S2.2Na/c19-12-8-11(27(21,22)23)6-9-7-13(28(24,25)26)15(16(20)14(9)12)18-17-10-4-2-1-3-5-10;;/h1-8,19-20H,(H,21,22,23)(H,24,25,26);;/q;2*+1/p-2/b18-17+;;

InChI key

GXEAXHYQKZAJGB-QIKYXUGXSA-L

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Certificate of Analysis

Certificate of Origin

L T Barata et al.
European journal of immunology, 27(5), 1236-1241 (1997-05-01)
We have attempted to identify Fc epsilon RI+ eosinophils in cutaneous late-phase reaction in atopic subjects biopsied at 6, 24 and 48 h after the injection of either allergen or a diluent control. Compared to the diluent sites, allergen-injected sites...
M Raica et al.
Romanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie, 44(1-4), 3-6 (2005-02-01)
A new trichrome staining method is presented. The staining solution contains: chromotrope RH, lissamine green SF, phosphomolibdic acid and acetic acid in aquous solution. The steps of the technique are described, insisting on the staining solution and dehydration. The authors...
Hussein Mohammed et al.
Ethiopian medical journal, 47(3), 233-237 (2009-12-04)
Intestinal microsporidiosis is the most common cause of chronic diarrhea in HIV/AIDS infected patients. The diagnosis of intestinal microsporidia depends on the detection of the spores by staining either with Chromotrope 2R or with fluorchrome uvitex 2B methods. To compare...
Y M Issa et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 75(4), 1297-1303 (2010-02-05)
Two simple and highly sensitive spectrophotometric methods were developed for the quantitative determination of the drug sildenafil citrate (SC), Viagra, in pure form and in pharmaceutical formulations, through ion-associate formation reactions (method A) with mono-chromotropic acid azo dyes, chromotrope 2B...
Heyao Wang et al.
European journal of pharmacology, 577(1-3), 162-169 (2007-10-16)
Allergic rhinitis is one of the most common chronic diseases. There are a number of effective therapeutic options for allergic rhinitis patients, such as intranasal corticosteroids. How to avoid the adverse effects of these traditional medicines has come to public...

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