CAS 2667583-09-5 appears in our catalog under these names: Bis-PEG12-acid 98+%, 4,7,10,13,16,19,22,25,28,31,34,37-Dodecaoxatetracontanedioic acid, 98%, 98%, Bis-PEG12-acid, 99.94%, Bis-PEG12-acid, 98%. Offered by: Ambeed, Chemat, MedChemExpress, Fluorochem. Available pack sizes: 100mg, 250mg, 1g, 5g, 10g, 5 g, 500 mg, 100 mg.