CAS 7581-97-7 appears in our catalog under these names: 2,3-Dichlorobutane, >95.0%(GC), 2,3-Dichlorobutane 95%, 2，3-Dichlorobutane, 95%, 95%, 2,3-DICHLOROBUTANE, 95%. Offered by: TCI, Ambeed, Chemat, Fluorochem. Available pack sizes: 250mg, 100mg, 1g, 5g.