Atto 647
SIGMA/97875 - BioReagent, suitable for fluorescence, ≥90% (HPCE)
MDL Number: MFCD05865408
Product Type: Chemical
| λ | in ethanol (with 0.1% trifluoroacetic acid) |
| assay | ≥90% (HPCE) |
| fluorescence | λex 643 nm; λem 665 nm in 0.1 M phosphate pH 7.0 |
| form | powder |
| manufacturer/tradename | ATTO-TEC GmbH |
| product line | BioReagent |
| Quality Level | 100  |
| storage temp. | −20°C |
| suitability | suitable for fluorescence |
| transmittance | 254 nm |
| 647 nm | |
| UV absorption | λ: 645-651 nm Amax |
| Application: | Atto fluorescent labels are designed for high sensitivity applications, including single molecule detection. Atto labels have rigid structures that do not show any cis-trans-isomerization. Thus these labels display exceptional intensity with minimal spectral shift on conjugation. |
| General description: | Atto 647 is a zwitterionic dye with a net electrical charge of zero. It is a pH sensitive product. While practically stable up to pH 8.5, it slowly degrades at higher pH. Atto 647 is a new label with high molecular absorption (120,000) and quantum yield (0.20) as well as enough Stokes shift between excitation and emission maximum. Atto 647 is characterized by a high photostability and brightness. In addition, this label has good water solubility and low triplet formation ability. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥90% (HPCE) |
| Storage Temp. | −20°C |
| UNSPSC | 12352108 |