product line
BioReagent
Assay
≥90% (HPCE)
form
powder
manufacturer/tradename
ATTO-TEC GmbH
transmittance
254 nm
647 nm
fluorescence
λex 643 nm; λem 665 nm in 0.1 M phosphate pH 7.0
λ
in ethanol (with 0.1% trifluoroacetic acid)
UV absorption
λ: 645-651 nm Amax
suitability
suitable for fluorescence
storage temp.
−20°C
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.
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.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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