CAS 6416-55-3 appears in our catalog under these names: 2–Quinizarincarboxylic acid, 9,10-Dihydro-1,4-dihydroxy-9,10-dioxo-2-anthracenecarboxylic acid, ≥98%, ≥98%, 2-Quinizarincarboxylic acid. Offered by: GLPBio, Chemat, MedChemExpress. Available pack sizes: 1mg, 5mg, 10mg, 20mg, 50mg, 100mg, 5 mg, 1 mg.