CAS 627-20-3 appears in our catalog under these names: cis–2–Pentene, cis-2-Pentene, >95.0%(GC), cis-2-Pentene, CIS-2-PENTENE, 98%, cis-2-Pentene, 98%(GC),RG, 98%(GC),RG. Offered by: GLPBio, TCI, Thermo Scientific (Acros), Sigma-Aldrich, Chemat. Available pack sizes: 1ml, 5ml, 10ml, 1g, 5g, 10g, 100mg.