CAS 2363756-50-5 appears in our catalog under these names: Azido-PEG12-NHS ester, Azido–PEG12–NHS ester, Azido-PEG12-NHS ester 95%, 2,5-Dioxopyrrolidin-1-yl 1-azido-3,6,9,12,15,18,21,24,27,30,33,36-dodecaoxanonatriacontan-39-oate, 98%, 98%, Azido-PEG12-NHS ester, 98.0%. Offered by: TargetMol, GLPBio, Ambeed, Chemat, MedChemExpress. Available pack sizes: 2mg, 5mg, 10mg, 25mg, 50mg, 100mg, 200mg, 1g.