15823-00-4

Basic information

• Product Name: Butanedioic acid, bis[(4-methoxyphenyl)methylene]-
• CAS NO: 15823-00-4
• Molecular Formula: C20H18O6
• Molecular Weight: 354.359
• Mol File: 15823-00-4.mol

Chemical Properties

• CAS DataBase Reference: Butanedioic acid, bis[(4-methoxyphenyl)methylene]-(CAS DataBase Reference)
• NIST Chemistry Reference: Butanedioic acid, bis[(4-methoxyphenyl)methylene]-(15823-00-4)
• EPA Substance Registry System: Butanedioic acid, bis[(4-methoxyphenyl)methylene]-(15823-00-4)

Safety Data

• Hazardous Substances Data: 15823-00-4(Hazardous Substances Data)

Upstream product

• 123-11-5 4-methoxy-benzaldehyde 
• 123-25-1 succinic acid diethyl ester 
• 60-29-7 diethyl ether 
• 141-52-6 sodium ethanolate 
• 917-58-8 potassium ethoxide 

Downstream Products

• 22994-49-6 2.3-Bis-(methoxycarbonylamino)-1.4-bis-(p-methoxy-phenyl)-butadien-(1.3) 
• 22815-61-8 Bis-(p-methoxybenzyliden)-bernsteinsaeure-diazid 
• 23291-93-2 2,3-Diisocyanato-1,4-bis--butadien-(1,3) 
• 56319-05-2 dimethyl 1,4-bis(4-methoxyphenyl)-1,3-butadiene-2,3-dicarboxylate 
• 22815-75-4 Bis-(p-methoxybenzyliden)-bernsteinsaeure-dichlorid 
• 93578-35-9 dianisyl succinic acid 
• 29283-60-1 bis-(p-methoxybenzylidene)succinic anhydrides 

Relevant articles and documents

Optimizing the photochromic performance of naphthopyrans in a rigid host matrix using poly(dimethylsiloxane) conjugation

A series of methoxy substituted 2,2-diaryl-2H-naphthopyran photochromic dyes were assembled incorporating hydroxy functionality to allow their subsequent attachment to flexible poly(dimethylsiloxane) oligomers. The photochromic performance of the generated PDMS-naphthopyran conjugates was studied in a thermoset host matrix and compared to non-conjugated, electronically equivalent control dyes. Both coloration and decoloration speeds were found to be greatly improved with critical T1/2 decoloration times reduced by 42-80%. The extent of solution-like performance provided by PDMS conjugation in the rigid host was examined with reference to the fade performance of control dyes in solution, and found to range from 20 to 90%. These measures are believed to be influenced by the electronic nature and steric interactions of the photochromic dyes.