CAS 219484-64-7 appears in our catalog under these names: Methyl nonafluorobutyl ether, 98%, Methyl Nonafluorobutyl Ether (mixture of isomers), >98.0%(GC), Butane, 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxy-, mixt. with 2-(difluoromethoxymethyl)-1,1,1,2,3,3,3-heptafluoropropane, 99%(mixture of isomers). Offered by: Combi-blocks, TCI, Chemat. Available pack sizes: 1g, 100g, 5g, 25g, 500g, 10g, 15g, 50g.