CAS 1642551-09-4 appears in our catalog under these names: Boc-NH-PEG12-NH2/ 99.52% (existing batch purity), Boc–NH–PEG12–NH2, Bocnh-PEG12-CH2CH2NH2, Boc-NH-PEG12-NH2 98%, t-Boc-N-Amido-PEG12-amine, 98%, 98%. Offered by: TargetMol, GLPBio, Biosynth, Ambeed, Chemat. Available pack sizes: 10mg, 100mg, 50mg, 500mg, 1000mg, 250mg, 1g, 5g.