Chemistry is traditionally divided into organic and inorganic chemistry. Recommanded Product: 6,7-Dimethoxy-3,4-dihydroisoquinoline, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 3382-18-1
The tetrahydroprotoberberine alkaloids (+)-thalictricavine <(+)-6> and (+)-canadine <(+)-23> have been synthesized from an optically resolved (+)-13-carboxy-7,8,13,14-tetrahydro-9-oxoprotoberberine <(+)-26>.This establishes the absolute configuration of (+)-thalictricavine as 13S,14R. (+)-Thalictrifoline <(+)-2> and (+)-cavidine <(+)-1> have also been prepared from a common intermediate, (+)-32, whose absolute configuration was established by correlation with (+)-26.This determines the absolute configuration of (+)-thalictrifoline as 13R,14R, of (+)-corydalic acid methyl ester (22) as 3R,4R, and of the protopine (+)-corycavine (20) as 13R.
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Reference：
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem