CAS 2080307-47-5 appears in our catalog under these names: 2,2',2''-(10-(2-Oxo-6,9,12,15-tetraoxa-3-azaoctadec-17-yn-1-yl)-1,4,7,10-tetraazacyclododecane-1,4,7-triyl)triacetic acid 95%, DOTA-PEG4-alkyne. Offered by: Ambeed, MedChemExpress. Available pack sizes: 10mg, 25mg, 50mg, 100mg, 250mg, 1g, Get quote.