CAS 1418561-41-7 appears in our catalog under these names: N3–PEG7–Tos, Azide-PEG7-Tos 98%, 20-Azido-3,6,9,12,15,18-hexaoxaicosyl 4-methylbenzenesulfonate, 98%, 98%, Azide-PEG7-Tos, Azide-PEG7-Tos, 98%. Offered by: GLPBio, Ambeed, Chemat, MedChemExpress, Fluorochem. Available pack sizes: 1g, 250mg, 100mg, 5g, 50 mg, 25 mg, 1 g, 100 mg.