CAS 56617-47-1 appears in our catalog under these names: 1-(4-Methoxyphenyl)-5-oxopyrrolidine-3-carboxylic acid, 97%, 1-(4-Methoxyphenyl)-5-oxopyrrolidine-3-carboxylic acid 98%. Offered by: Combi-blocks, Ambeed. Available pack sizes: 1g, 10g, 25g, 5g, 250mg.