1247022-48-5

Basic information

• Product Name: 3-(4,5-bis(dimethylamino)naphthalen-1-yl)furan-2,5-dione
• Synonyms: 3-(4,5-bis(dimethylamino)naphthalen-1-yl)furan-2,5-dione
• CAS NO: 1247022-48-5
• Molecular Weight: 310.353
• Mol File: 1247022-48-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 3-(4,5-bis(dimethylamino)naphthalen-1-yl)furan-2,5-dione(CAS DataBase Reference)
• NIST Chemistry Reference: 3-(4,5-bis(dimethylamino)naphthalen-1-yl)furan-2,5-dione(1247022-48-5)
• EPA Substance Registry System: 3-(4,5-bis(dimethylamino)naphthalen-1-yl)furan-2,5-dione(1247022-48-5)

Safety Data

• Hazardous Substances Data: 1247022-48-5(Hazardous Substances Data)

Upstream product

• 5926-51-2 bromomaleic anhydride 
• 20734-56-9 1,8-dimethylaminonaphthalene 

Relevant articles and documents

A colorimetric proton sponge

1,8-Bis(dimethylamino)naphthalene ( Proton Sponge ) and bromomaleic anhydride react quickly at room temperature, generating 3-(4,5-bis(dimethylamino)napthalen-1-yl)furan-2,5-dione (4-maleicanhydridoproton sponge or MAPS ). MAPS is a deep purple solid that exhibits positive solvatochromism in solution. It is a weaker base than Proton Sponge. When protonated in solution, MAPS loses its color, but the color change can be reversed by deprotonation with a stronger base. MAPS thus acts as a colorimetric version of a proton sponge.