CAS 2143097-05-4 appears in our catalog under these names: 2-[2-(2-{[2-(2,6-dioxopiperidin-3-yl)-1,3-dioxo-2,3-dihydro-1H-isoindol-4-yl]amino}ethoxy)ethoxy]acetic acid, 97%, 97%, Pomalidomide-PEG2-acetic acid, 99.43%. Offered by: Chemat, MedChemExpress. Available pack sizes: 100mg, 250mg, 1g, 25 mg, 10 mg, 5 mg.