CAS 1654280 appears in our catalog under these names: Tetrahydropapaverine hydrochloride/ 99.83% (existing batch purity), 1-(3,4-Dimethoxybenzyl)-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline hydrochloride, 95%. Offered by: TargetMol, Fluorochem. Available pack sizes: 5mg, 10mg, 25mg, 50mg, 100mg, 500mg, 1g, 5g.