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Specifications

Reagent for the covalent modification of cysteine residues in proteins. NEM gives a clear solution in ethanol at 50 mg/ml. NEM dissolves in water (>50 mg in 4 ml); however, aqueous solutions are unstable. The rate of hydrolysis is pseudo-first order and significantly dependent on pH.
Catalog #	011357
Form	White Solid
Melting Point	44-46°C
Solubility	Chloroform, Methanol
CAS Number	128-53-0
Molecular Formula	C6H7NO2
Molecular Weight	125.13
Important Note	This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological. Toxicity and Hazards: All products should be handled by qualified personnel only, trained in laboratory procedures.
Alternate names	1-Ethyl-1H-pyrrole-2,5-dione; 1-Ethyl-1H-pyrrole-2,5-dione; Ethylmaleimide; Maleic Acid N-Ethylimide; NEM; NSC 7638;