BioReagent, suitable for fluorescence, ≥90% (HPCE)

CPM, 1H-Pyrrole-2,5-dione, 1-(4-(7-(diethylamino)-4-methyl-2-oxo-2H-1-benzopyran-3-yl)phenyl)-
Empirical Formula (Hill Notation):
Número de CAS:
Peso molecular:
MDL number:
PubChem Substance ID:

Quality Level

product line



≥90% (HPCE)


λex 391 nm; λem 472 nm in methanol: 2-mercaptoethanol


suitable for fluorescence

storage temp.


SMILES string




InChI key


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Fluorescence probe for glutathione for intact cells; specific advantages: only thio derivative fluoresces, high quantum yield and good Stokes shift

Biochem/physiol Actions

Used to monitor release of thiols, quantitate thiol in microplate reactions, and to distinguish proliferating cancer cells by nucleolar protein staining.

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

W Feng et al.
Molecular pharmacology, 55(5), 821-831 (1999-04-30)
Quinones undergo redox cycling and/or arylation reactions with key biomolecules involved with cellular Ca2+ regulation. The present study utilizes nanomolar quantities of the fluorogenic maleimide 7-diethylamino-3-(4'-maleimidylphenyl)-4-methylcoumarin (CPM) to measure the reactivity of hyperreactive sulfhydryl moieties on sarcoplasmic reticulum (SR) membranes...
F C Ayers et al.
Analytical biochemistry, 154(1), 186-193 (1986-04-01)
A microfluorometric assay for thiols has been developed using the thiol-specific fluorochrome N-[4-(7-diethylamino-4-methyl-3-coumarinyl)phenyl]maleimide (CPM). The technique may be used to quantitate either cellular or plasma thiols over a range of 0.01 to 3.0 nmol and may be used with as...
Victor Goncalves et al.
Analytical biochemistry, 421(1), 342-344 (2011-11-05)
N-myristoylation is the irreversible attachment of a C(14) fatty acid, myristic acid, to the N-terminal glycine of a protein via formation of an amide bond. This modification is catalyzed by myristoyl-coenzyme A (CoA):protein N-myristoyltransferase (NMT), an enzyme ubiquitous in eukaryotes...
D J Steenkamp
The Biochemical journal, 292 ( Pt 1), 295-301 (1993-05-15)
Methods for the qualitative and quantitative analysis of thiols by means of the fluorogenic reagent 7-diethylamino-3-(4'-maleimidylphenyl)-4-methylcoumarin are described, with particular reference to the trypanosomatid metabolites glutathionylspermidine (GSH-spermidine) and trypanothione. Second-order rate constants for the derivatization of seven different thiols under...
Dorien Goubert et al.
Pain practice : the official journal of World Institute of Pain, 15(8), 765-777 (2014-11-13)
Pain facilitation as well as pain inhibition might be present in chronic pain patients. A decreased efficacy of pain inhibition can be measured by conditioned pain modulation (CPM). The use of the CPM paradigm in scientific research has boosted over...

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