CAS 598-23-2 appears in our catalog under these names: 3-Methyl-1-butyne, 96% , 3-Methyl-1-butyne, 96%, 3-METHYL-1-BUTYNE, 95%. Offered by: Thermo Scientific (Alfa Aesar), Thermo Scientific (Acros), Sigma-Aldrich, Fluorochem. Available pack sizes: 5g, 25g, 1ML, 10ML, 1g, 10g.