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Merck

A6270

Sigma-Aldrich

Azure A chloride

Dye content ≥70 %, Powder or crystals

Sinónimos:

Azure eosin methylene blue; 7-Amino-N,N-dimethyl-3H-phenothiazin-3-iminium chloride

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About This Item

Fórmula empírica (notación de Hill):
C14H14ClN3S
Número de CAS:
Peso molecular:
291.80
Colour Index Number:
52005
Beilstein/REAXYS Number:
3922287
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47

product name

Azure A chloride, Dye content ≥70 %

form

powder or crystals

Quality Level

composition

Dye content, ≥70%

color

green to very dark green

mp

290 °C (dec.) (lit.)

solubility

water: 1 mg/mL

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

NC1=CC(SC(C2=N3)=CC(C=C2)=[N+](C)C)=C3C=C1.[Cl-]

InChI

1S/C14H13N3S.ClH/c1-17(2)10-4-6-12-14(8-10)18-13-7-9(15)3-5-11(13)16-12;/h3-8,15H,1-2H3;1H

InChI key

NALREUIWICQLPS-UHFFFAOYSA-N

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Application

Azure A chloride has been used for the staining of polyacrylamide gel to analyse the bovine lung heparin digestion by heparinase I. It has been used for the determination of the sulphated groups content in polysaccharides.

Biochem/physiol Actions

Azure A is a basic cationic dye. The combination of azure A and silver staining is used for the quantification of glycosaminoglycans in agarose gels. It is also used for the staining of chromosomes in the nucleus. It is a main component of the azure B/polychromed methylene blue – eosin stains family, also referred to as the Romanowsky stain.

Caution

Handle and store under argon. Glove bag item.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


Certificados de análisis (COA)

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How Romanowsky stains work and why they remain valuable - including a proposed universal Romanowsky staining mechanism and a rational troubleshooting scheme.
Horobin RW
Biotechnic & Histochemistry, 86, 36-51 (2011)
Generating heparan sulfate saccharide libraries for glycomics applications.
Powell AK, et al.
Nature Protocols, 5, 821-833 (2010)
Quantification and characterization of glycosaminoglycans at the nanogram level by a combined azure A-silver staining in agarose gels.
van de Lest CH, et al.
Analytical Biochemistry, 221, 356-361 (1994)
Biochemical and antiviral activities of enzymatic hydrolysates from different invasive French seaweeds.
Hardouin K, et al.
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P Chieco et al.
The Histochemical journal, 25(8), 569-577 (1993-08-01)
Mitotic index is a clinically important parameter in cancer pathology. We developed a staining method using Toluidine Blue to detect efficiently and rapidly mitotic figures in sections of formalin-fixed paraffin-embedded human and rat tissues. Sections were stained at acid pH

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