ChemicalBook--->CAS DataBase List--->21746-40-7

21746-40-7

21746-40-7 Structure

21746-40-7 Structure
IdentificationBack Directory
[Name]

N-PROPYLMALEIMIDE
[CAS]

21746-40-7
[EINECS(EC#)]

244-564-8
[Molecular Formula]

C7H9NO2
[MDL Number]

MFCD00014541
[MOL File]

21746-40-7.mol
[Molecular Weight]

139.15
Chemical PropertiesBack Directory
[Melting point ]

24-26°C
[Boiling point ]

97 °C18 mm Hg(lit.)
[density ]

1.112 g/mL at 25 °C(lit.)
[refractive index ]

n20/D 1.4760(lit.)
[Fp ]

138 °F
[storage temp. ]

2-8°C
[pka]

-2.18±0.20(Predicted)
[Specific Gravity]

1.112
[Water Solubility ]

Insoluble in water.
[BRN ]

1525008
Safety DataBack Directory
[Hazard Codes ]

Xn
[Risk Statements ]

20/21/22-36/37/38-43-22
[Safety Statements ]

16-36/37
[RIDADR ]

UN 1993 3/PG 3
[WGK Germany ]

3
[F ]

10-19-21
[HazardClass ]

6.1
[PackingGroup ]

III
Hazard InformationBack Directory
[Enzyme inhibitor]

This thiol-reactive reagent (FW = 139.15 g/mol; CAS 21746-40-7), also known as NPM and 1-propyl-1H-pyrrole-2,5-dione, readily alkylates protein sulfhydryl groups. Under alkaline conditions it can also react with amino groups. Some enzymes are inactivated at faster rates with analogues having longer alkyl chains (e.g., the inactivation rate of yeast alcohol dehydrogenase with N-octylmaleimide is significantly faster than with N- ethylmaleimide1). See also N-Ethylmaleimide Target (s) : acylglycerol lipase, or monoacylglycerol lipase.
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