CAS 1909223-02-4 appears in our catalog under these names: TAMRA-PEG4-acid, 98%, TAMRA–PEG4–acid, TAMRA-PEG4-acid 95% (5-TAMRA), TAMRA-PEG4-acid, 95% (5-TAMRA), 95% (5-TAMRA), TAMRA-PEG4-acid, 95.34%. Offered by: AmBeed, GLPBio, Chemat, MedChemExpress. Available pack sizes: 25mg, 10mg, 50mg, 100mg, 1mg, 5mg, 5 mg, 10 mg.