CAS 19716-59-7 appears in our catalog under these names: Oxypalmatine/ 99.42% (existing batch purity), 2,3,9,10-Tetramethoxy-5H-isoquinolino[3,2-a]isoquinolin-8(6H)-one, Oxypalmatine, 99.73%. Offered by: TargetMol, Chemat, MedChemExpress. Available pack sizes: 1mg, 5mg, 10mg, 20mg, 10 mg, 5 mg.