CAS 2101722-60-3 appears in our catalog under these names: Mal-amido-PEG12-NHS ester, Mal–amido–PEG12–NHS ester, Mal-amido-PEG12-NHS, Mal-amido-PEG12-NHS 95%, 2,5-Dioxo-1-pyrrolidinyl 43-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)-41-oxo-4,7,10,13,16,19,22,25,28,31,34,37-dodecaoxa-40-azatritetracontanoate, 95%, 95%. Offered by: TargetMol, GLPBio, Biosynth, Ambeed, Chemat. Available pack sizes: 2mg, 100mg, 25mg, 50mg, 250mg, 1g, 50 mg, 100 mg.