CAS 6217-22-7 appears in our catalog under these names: PYRENE-4,5-QUINONE, >95% (HPLC), Pyrene–4,5–dione, Pyrene-4,5-dione, >98.0%(GC), Pyrene-4,5-dione 95%, 4,5-Pyrenedione, 97%, 97%. Offered by: TRC, GLPBio, TCI, Ambeed, Chemat. Available pack sizes: 2,5mg, 25mg, 5mg, 100mg, 1g, 250mg, 5g.