CAS 934-30-5 appears in our catalog under these names: EXO-5-NORBORNENECARBOXYLIC ACID, 97%, exo-Bicyclo[2.2.1]hept-5-ene-2-carboxylic acid 95%, exo-Bicyclo[2.2.1]hept-5-ene-2-carboxylic acid, 95%, 95%. Offered by: Sigma-Aldrich, Ambeed, Chemat. Available pack sizes: 1G, 5G, 250mg.