CAS 4683-50-5 appears in our catalog under these names: 3–Methoxy–2–cyclopenten–1–one, 3-Methoxy-2-cyclopenten-1-one, 3-Methoxycyclopent-2-enone 98%, 3-METHOXY-2-CYCLOPENTEN-1-ONE, 99%, 3-Methoxycyclopent-2-enone, 96%, 96%. Offered by: GLPBio, Biosynth, Ambeed, Sigma-Aldrich, Chemat. Available pack sizes: 1g, 250mg, 5g, 2,5g, 10g, 25g, 100mg.