Azur A 70% (Farbstoffgehalt) certified by the Biological Stain Commission, Sigma-Aldrich®

Lieferant: SIGMA-ALDRICH MICROSCOPY
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M-Clarity™ Qualitätsstufe = MQ200

861049-25GEA 216 CHF
861049-25G 861049-5G
Azur A 70% (Farbstoffgehalt) certified by the Biological Stain Commission, Sigma-Aldrich®
Azur A

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. Azure A is a main component of the azure B/polychromed methylene blue-eosin stains family, also referred to as the Romanowsky stain. Azure A is a basic cationic dye.


Azure A has been used to determine the amount of charged dextran sulfate in the nanoparticles for the study involving incorporation of heparin-binding proteins into preformed dextran sulfate-chitosan nanoparticles. Certified for use in Lillie′s modified Nocht′s method and the NCCLS method for blood smears.

Formel: C₁₄H₁₄ClN₃S
MW: 291,797 g/mol
Melting Pt: 290 °C (Zers., Lit.)
Lager Temperatur: Room Temperature
MDL Number: MFCD00012112
CAS-Nummer: 531-53-3
EINECS: 208-510-7

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Spezifikation Testergebnisse

Appearance (Colour) Blue to Very Dark Blue to Very Dark Green
Appearance (Form) Powder or Crystals
Infrared spectrum Conforms to Structure
Wave Length, c = 0.003g/L; Water 620 - 634 nm
Extinction Coefficient ≥34000
Wave Length 287 - 291 nm
Extinction Coefficient ≥26000
Wave Length 242 - 246 nm
Extinction Coefficient ≥11000
Solubility (Turbidity), c = 1 mg/ml; Water Turbid
Solubility (Colour) Dark Blue to Very Dark Blue and Dark Purple to Very Dark Purple and Blue-Purple
Biological Stain Commision, Commission Certified Number: Pass
Dye Content Approximately 70%

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