CAS 117-39-5 appears in our catalog under these names: Quercetin, Quercetin 100 µg/mL in Acetonitrile, Quercetin, >95% (HPLC), Quercetin, anhydrous, 95.00%, Quercetin, >95.0%(HPLC)(qNMR). Offered by: Chemat Brand, Dr. Ehrenstorfer, TRC, GLPBio, Chemat. Available pack sizes: on request, 100mg, 1ml, 1g, 25g, 5g, 10mM (in 1ml dmso), 500mg.