1-(3,4-Dimethoxybenzyl)-3,4-dihydro-6,7-dimethoxyisoquinolinium chloride

It serves as a direct precursor, undergoing oxidation (dehydrogenation) to form papaverine itself, making it vital for producing papaverine and its derivatives for pharmaceutical applications. 1-(3,4-Dimethoxybenzyl)-3,4-dihydro-6,7-dimethoxyisoquinolinium chloride, also known as 3,4-Dihydropapaverine HCl (DHP HCl), is a crucial intermediate in the synthesis of the natural alkaloid Papaverine, a well-known antispasmodic drug used to relax smooth muscles, and related isoquinoline alkaloids.

API Name Papaverine
CAS No 5884-22-0
Molecular Formula C20H24ClNO4
Molecular Weight 377.9 g/mol
Synonyms 1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxy-3,4-dihydroisoquinoline;hydrochloride

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