CAS 2225903-66-0 appears in our catalog under these names: Bis–PEG13–acid, Bis-PEG13-acid 99%, 4,7,10,13,16,19,22,25,28,31,34,37,40-Tridecaoxatritetracontanedioic acid, 97%, 97%, Bis-PEG13-acid. Offered by: GLPBio, Ambeed, Chemat, MedChemExpress. Available pack sizes: 100mg, 250mg, 1g, 5g, 10g, 25g, 50 mg, 100 mg.