Auramine O

"Canary yellow" redirects here. For the color, see Yellow. For the bird, see Yellow canary.

Auramine O

Solid Auramine O Auramine O in aqueous solution
Names
IUPAC name bis[4-(dimethylamino)phenyl]methaniminium chloride
Other names Basic yellow 2, pyocatanium aureum, aizen auramine, pyoktanin yellow, canary yellow, pyoktanin, or C.I. 41000
Identifiers
CAS Number	2465-27-2 Y
ChemSpider	16254 Y
Jmol 3D model	Interactive image Interactive image
PubChem	17170
InChI 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 Y Key: KSCQDDRPFHTIRL-UHFFFAOYSA-N Y InChI=1/C17H21N3/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 Key: JPIYZTWMUGTEHX-UHFFFAOYAY InChI=1/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 Key: KSCQDDRPFHTIRL-UHFFFAOYAK
SMILES [N@H]=C(c1ccc(N(C)C)cc1)c2ccc(N(C)C)cc2 Cl.[N@H]=C(c1ccc(N(C)C)cc1)c2ccc(N(C)C)cc2
Properties
Chemical formula	C17H22ClN3
Molar mass	303.83 g·mol−1
Melting point	267 °C (513 °F; 540 K)
Vapor pressure	{{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references

Auramine O is a diarylmethane dye used as a fluorescent stain. In its pure form, Auramine O appears as yellow needle crystals. It is very soluble in water and soluble in ethanol.

Auramine O can be used to stain acid-fast bacteria (e.g. Mycobacterium, where it binds to the mycolic acid in its cell wall) in a way similar to Ziehl-Neelsen stain. It can also be used as a fluorescent version of Schiff reagent.

Auramine O can be used together with Rhodamine B as the Truant auramine-rhodamine stain for Mycobacterium tuberculosis. It can be also used as an antiseptic agent.

External links

• Auramine O spectra data