Auramine O
ALDRICH/861030 - Dye content 85 %, certified by the Biological Stain Commission
Synonym: 4,4′-(Imidocarbonyl)bis(N,N-dimethylaniline) monohydrochloride; Basic Yellow 2; Pyoctaninum aureum
CAS Number: 2465-27-2
Empirical Formula (Hill Notation): C17H21N3 · HCl
Molecular Weight: 303.83
EC Number: 219-567-2
MDL Number: MFCD00012484
Linear Formula: C17H21N3 · HCl
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 861030-25G
| ε (extinction coefficient) | ≥12000 at 249-255 nm in water at 0.005 g/L |
| ≥15000 at 367-373 nm in water at 0.005 g/L | |
| ≥36000 at 429-435 nm in water at 0.005 g/L | |
| λmax | 370 nm |
| 434 nm (2nd) | |
| application(s) | diagnostic assay manufacturing hematology histology |
| composition | Dye content, 85% |
| form | powder or chunks |
| grade | certified by the Biological Stain Commission |
| InChI | 1S/C17H21N3.ClH/c1-19(2)1 |
| InChI key | KSCQDDRPFHTIRL-UHFFFAOYSA |
| mp | >250 °C (dec.) (lit.) |
| Quality Level | 200  |
| SMILES string | Cl[H].CN(C)c1ccc(cc1)C(=N |
| solubility | 95% ethanol: 1 mg/mL, clear to hazy, yellow to very deep yellow |
| storage temp. | room temp |
| Application: | Auramine O has been used to study the cuticle/cutin in the epidermis of the pollen presenter in Vangueria infausta. |
| Biochem/physiol Actions: | Auramine O is used for the staining of acid-fast organisms, coccidia. Auramine O along with carbol 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. |
| Packaging: | 25 g in glass bottle |
| Suitability: | Certified for use by fluorescence microscopy in Churukian′s modification of Truant′s fluorescent method for acid fast bacilli on paraffin sections. |
| Symbol |    GHS07,GHS08,GHS09 |
| Signal word | Warning |
| Hazard statements | H302 - H319 - H351 - H411 |
| Precautionary statements | P201 - P273 - P301 + P312 + P330 - P305 + P351 + P338 - P308 + P313 |
| Hazard Codes | T |
| Risk Statements | 22-24-40 |
| Safety Statements | 36/37-45 |
| RIDADR | UN 2811 6.1 / PGIII |
| WGK Germany | WGK 3 |
| mp | >250 °C (dec.) (lit.) |
| Storage Temp. | room temp |
| Colour Index Number | 41000 |
| UNSPSC | 12171500 |