CAS 2380318-57-8 appears in our catalog under these names: Thalidomide-O-PEG4-azide, Thalidomide–O–PEG4–azide, 4-((14-Azido-3,6,9,12-tetraoxatetradecyl)oxy)-2-(2,6-dioxopiperidin-3-yl)isoindoline-1,3-dione, 95%, 95%, Thalidomide-O-PEG4-azide, 98.02%, Thalidomide-O-PEG4-azide, 95%. Offered by: TargetMol, GLPBio, Chemat, MedChemExpress, Fluorochem. Available pack sizes: 2mg, 25mg, 50mg, 100mg, 250mg, 25 mg, 50 mg, 100 mg.