CAS 1228100-59-1 appears in our catalog under these names: TAMRA–PEG3–Azide, TAMRA-PEG3-Azide/ 95%, 9-[4-(13-Azido-1-oxo-5,8,11-trioxa-2-azatridec-1-yl)-2-carboxyphenyl]-3,6-bis(dimethylamino)xanthylium, inner salt, 96%, 96%, TAMRA-PEG3-Azide, 96.43%. Offered by: GLPBio, TargetMol, Chemat, MedChemExpress. Available pack sizes: 1mg, 5mg, 10mg, 25mg, 50mg, 100mg, 10 mg, 5 mg.