CAS 298682-50-5 appears in our catalog under these names: 2-(1,3-Dioxo-1,3,3a,4,7,7a-hexahydro-2h-4,7-methanoisoindol-2-yl)benzoic acid, 95%, 2-(1,3-Dioxo-3a,4,7,7a-tetrahydro-1H-4,7-methanoisoindol-2(3H)-yl)benzoic acid, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 1g, 5g.