CAS 1121756-11-3 appears in our catalog under these names: Sulfo-Cy 3 carboxylic acid, 95%, 95%, Sulfo–Cy3(Me)COOH, Sulfo-Cy3(Me)COOH, 96.60%, Sulfo-Cyanine3 carboxylic acid, 95%, Sulfo–Cyanine3 carboxylic acid. Offered by: Chemat, GLPBio, MedChemExpress, Lumiprobe. Available pack sizes: 100mg, 10mg, 25mg, 5mg, 10 mg, 5 mg, 25 mg, 1mg.