Atto 540 Q NHS ester

MDL number:
Pricing and availability is not currently available.

Quality Level


≥90% (coupling to amines)


UV/Vis spectroscopy: suitable


corresponds for UV test

storage temp.



Atto 540Q is a new quencher for fluorescence characterized by high molecular absorption (105.000). Atto 540Q is characterized by a high photostability and thermostability. It is moderately hydrophilic, and soluble in polar solvents as DMF or DMSO. Atto 540 Q NHS ester is used to label molecules such as proteins via conjugation to primary amine groups.

Legal Information

This product is for Research use only. In case of intended commercialization, please contact the IP-holder (ATTO-TEC GmbH, Germany) for licensing.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Gražvydas Lukinavičius et al.
Current opinion in chemical biology, 15(6), 768-774 (2011-11-15)
Numerous synthetic fluorophores have been developed that can switch their spectroscopic properties upon interaction with other molecules or by irradiation with light. In recent years, protein-labeling techniques have been introduced that permit the specific attachment of such molecules to proteins...
Daniela C Dieterich
Current opinion in neurobiology, 20(5), 623-630 (2010-07-24)
Fluorescent proteins have revolutionized cell biology and, therefore, our understanding of the complex molecular and cellular mechanisms that wire the brain together and enable its plasticity throughout life. The ability to visualize cell biological processes has inspired the development of...
Switching modulation for protein labeling with activatable fluorescent probes.
Kalyan K Sadhu et al.
Chembiochem : a European journal of chemical biology, 12(9), 1299-1308 (2011-06-02)
Fluorescent Labeling of Peptides
Read More

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