CAS 356574-17-9 appears in our catalog under these names: 2-(2,5-Dimethoxyphenyl)-1,3-dioxoisoindoline-5-carboxylic acid, 95%, 2-(2,5-Dimethoxyphenyl)-1,3-dioxoisoindoline-5-carboxylic acid, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 1g, 5g.