CAS 14731-39-6 appears in our catalog under these names: 4-(But-3-yn-1-yl)morpholine, 4-(But-3-yn-1-yl)morpholine 95%, 4-(But-3-yn-1-yl)morpholine, 95%, 95%, 4-(But-3-yn-1-yl)morpholine, 95%. Offered by: Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 1g, 100mg, 250mg.