CAS 26749-93-9 appears in our catalog under these names: (3,5-Dioxo-4-aza-tricyclo[5.2.1.02,6]dec-8-en-4-yl)-acetic acid, 95%, 2-(1,3-Dioxo-3a,4,7,7a-tetrahydro-1H-4,7-methanoisoindol-2(3H)-yl)acetic acid, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 100mg, 1g, 250mg, 5g, 10g.