Atto 540 Q maleimide

≥90% (coupling to thiols)

MDL number:

Quality Level


≥90% (coupling to thiols)


UV/Vis spectroscopy: suitable


corresponds for UV test

storage temp.


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

Limin Ma et al.
The Analyst, 137(21), 5046-5050 (2012-09-13)
4-Nitro-1,8-naphthalic anhydride (NNA) was used to distinguish cysteine from homocysteine and other potentially interfering thiols through a novel sequential substitution mechanism. The discrimination involves a blue-fluorescent thioether formation via nucleophilic aromatic substitution of the nitro group by thiol, followed by...
Thiol reactive probes and chemosensors.
Peng H, Chen W, Cheng Y, et al.
Sensors, 12, 15907-15946 (2012)
Hyo Sung Jung et al.
Biomaterials, 33(33), 8495-8502 (2012-08-22)
We have synthesized a series of coumarins (1-3) that can emit fluorescence in a turn-on manner through a Michael-type reaction with thiol-containing compounds. The only difference among the coumarins is the position of a carboxyl group on its benzene ring...

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