CAS 930-22-3 appears in our catalog under these names: Butadiene monoxide, 95%, 3,4–Epoxy–1–butene, Butadiene monoxide, 98% , 3,4-Epoxy-1-butene, 1,3-Butadiene Monoepoxide, >97.0%(GC). Offered by: Combi-blocks, GLPBio, Thermo Scientific (Alfa Aesar), Biosynth, TCI. Available pack sizes: 1g, 25g, 100g, 10g, 5g, 50g, 250g.