CAS 890016-39-4 appears in our catalog under these names: Lipoamido–PEG4–azide, Lipoamido-PEG3-azide, LIpoamido-peg3-azide 95%, N-(2-(2-(2-(2-Azidoethoxy)ethoxy)ethoxy)ethyl)-5-(1,2-dithiolan-3-yl)pentanamide, 95%, 95%, Lipoamido-PEG4-azide. Offered by: GLPBio, Biosynth, Ambeed, Chemat, MedChemExpress. Available pack sizes: 100mg, 250mg, 500mg, 10mg, 25mg, 50mg, 5g, 1g.