91788-21-5

Basic information

• Product Name: 3-carboxy-1,5-bis-(4-methoxy-3-sulphophenyl)pentane-1,5-dione
• CAS NO: 91788-21-5
• Molecular Weight: 516.504
• Mol File: 91788-21-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 3-carboxy-1,5-bis-(4-methoxy-3-sulphophenyl)pentane-1,5-dione(CAS DataBase Reference)
• NIST Chemistry Reference: 3-carboxy-1,5-bis-(4-methoxy-3-sulphophenyl)pentane-1,5-dione(91788-21-5)
• EPA Substance Registry System: 3-carboxy-1,5-bis-(4-methoxy-3-sulphophenyl)pentane-1,5-dione(91788-21-5)

Safety Data

• Hazardous Substances Data: 91788-21-5(Hazardous Substances Data)

Upstream product

• 100-06-1 1-(4-methoxyphenyl)ethanone 
• 6000-59-5 glyoxalic acid monohydrate 
• 91788-20-4 sodium 5-acetyl-2-methoxybenzenesulphonate 

Downstream Products

• 91788-40-8 C₂₄H₂₅NO₁₀S₂ 
• 91788-39-5 2,6-Bis-(4-methoxy-3-sulfo-phenyl)-isonicotinic acid; compound with perchloric acid 
• 91788-24-8 4-carboxy-2-(4-methoxy-3-sulphonatophenyl)-6-(4-methoxy-3-sulphophenyl)pyrylium 

Relevant articles and documents

PYRYLIUM-MEDIATED TRANSFORMATIONS OF NATURAL PRODUCTS. PART 3. SYNTHESIS OF WATER-SOLUBLE PYRYLIUM SALTS AND THEIR PREPARATIVE REACTIONS WITH AMINES

A series of water-soluble pyrylium salts and zwitterions has been prepared containing two or three carboxylic or sulphonic acid groups.These pyrylium salts react in aqueous solution with ammonia to give the corresponding pyridines and with n-butylamine, benzylamine, and ω-amino groups of lysine to give the corresponding pyridinium systems, usually as betaines.The pyridinium betainess (m.p > 300 deg C) show characteristic 13C n.m.r. spectra which have been nearly fully assigned.