Chemistry is traditionally divided into organic and inorganic chemistry. Quality Control of 6,7-Dimethoxy-1,2,3,4-tetrahydroisoquinoline, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 1745-07-9
QUINAZOLINE DERIVATIVES
Compounds of the formula I in which R, X, L2 and A1-A6 have the meanings indicated in Claim 1, are PI3K inhibitors and can be employed, inter alia, for the treatment of autoimmune diseases, inflammation, cardiovascular diseases, neurodegenerative diseases and tumours.
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Reference：
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem