Skip to Content
Merck
All Photos(2)

Key Documents

View All Documentation

A9655

Sigma-Aldrich

Auramine O

Dye content, ≥80%, certified by the Biological Stain Commission, powder

Synonym(s):

4,4′-(Imidocarbonyl)bis(N,N-dimethylaniline) monohydrochloride, Basic Yellow 2, Pyoctaninum aureum

Sign Into View Organizational & Contract Pricing
All Photos(2)

About This Item

Empirical Formula (Hill Notation):
C17H21N3 · HCl
CAS Number:
2465-27-2
Molecular Weight:
303.83
Colour Index Number:
41000
Beilstein:
4030061
EC Number:
219-567-2
MDL number:
MFCD00012484
UNSPSC Code:
12171500
PubChem Substance ID:
24891484
NACRES:
NA.47

product name

Auramine O, Dye content ≥80 %, certified by the Biological Stain Commission

grade

certified by the Biological Stain Commission

form

powder

composition

Dye content, ≥80%

color

yellow to green

mp

>250 °C (dec.) (lit.)

solubility

ethanol: 1 mg/mL, yellow to orange

λmax

370 nm in H2O
432 nm in H2O

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Cl[H].CN(C)c1ccc(cc1)C(=N)c2ccc(cc2)N(C)C

InChI

1S/C17H21N3.ClH/c1-19(2)15-9-5-13(6-10-15)17(18)14-7-11-16(12-8-14)20(3)4;/h5-12,18H,1-4H3;1H

InChI key

KSCQDDRPFHTIRL-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

General description

Certified for use by fluorescence microscopy in Churukian′s modification of Truant′s fluorescent method for acid fast bacilli on paraffin sections.

Auramine O is used for the staining of acid-fast organisms like coccidia. Along with carbol, it generates brilliant yellow fluorochrome of tubercle bacilli. It is effective in detecting positive cases of tuberculosis. Auramine O binds to the mycolic acid in the bacterial cell wall.

Application

Auramine O has been used to study its absorption by a natural biopolymer poly (γ-glutamic acid).

Signal Word

Warning

Hazard Statements

H302,H319,H351,H411

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Carc. 2 - Eye Irrit. 2

Storage Class Code

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

WGK

WGK 3

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

Customers Also Viewed

Slide 1 of 1

1 of 1

Methylene blue certified by the Biological Stain Commission

Sigma-Aldrich

M9140

Methylene blue

E W Koneman.
Koneman's Color Atlas and Textbook of Diagnostic Microbiology, 1565-1565 (2006)
Equilibrium and kinetic studies on sorption of basic dyes by a natural biopolymer poly (γ-glutamic acid).
Inbaraj B S, et al.
Biochemical Engineering Journal, 31(3), 204-215 (2006)
Jessica Minion et al.
Journal of clinical microbiology, 49(5), 2024-2026 (2011-03-25)
Light-emitting diode fluorescence microscopy is being scaled up for tuberculosis control, but fading of auramine-stained slides could compromise external quality assurance. We stored auramine-stained slides and reexamined them over time. Slides stored in all environments faded quickly, with significant changes
Ismael A Heisler et al.
The journal of physical chemistry. B, 113(6), 1623-1631 (2009-01-17)
The effects of confinement on the ultrafast torsional reaction of auramine O in aqueous solution are investigated through ultrafast fluorescence up-conversion with 50 fs time resolution. The aqueous solution is confined in nanoscale water droplets by an ionic surfactant. The
M Habtamu et al.
The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease, 16(3), 402-407 (2012-05-30)
Mawenzi Regional Hospital, northern Tanzania. To determine the value of light-emitting diode (LED) microscopy in diagnosing tuberculosis (TB) on bleach-treated and direct sputum smears. Sputum samples were collected from patients suspected of pulmonary TB who presented consecutively at the laboratory
View All Related Papers

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