CAS 637-90-1 appears in our catalog under these names: 9–Oxabicyclo(6·1·0)non–4–ene, 1,2-Epoxy-5-cyclooctene, 1,2-Epoxy-5-cyclooctene 97%, 9-OXABICYCLO(6.1.0)NON-4-ENE, 95%, 1,2-Epoxy-5-cyclooctene, 97%, 97%. Offered by: GLPBio, Biosynth, Ambeed, Sigma-Aldrich, Chemat. Available pack sizes: 1g, 250mg, 5g, 1000mg, 500mg, 2000mg, 5000mg, 10000mg.