Synonyms: Ammonium,[p-(2-carboxyvinyl)phenyl]trimethyl-, chloride, ester with7-hydroxy-4-methylcoumarin (8CI); Benzenaminium,N,N,N-trimethyl-4-[3-[(4-methyl-2-oxo-2H-1-benzopyran-7-yl)oxy]-3-oxo-1-propenyl]-,chloride (9CI); 4-Methylumbelliferyl p-(N,N,N-trimethylammonium)cinnamatechloride; 4-Methylumbelliferyl p-trimethylammonium cinnamate chloride; MUTMAC