Chemistry is traditionally divided into organic and inorganic chemistry. name: 1-Chloroisoquinoline, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 19493-44-8
Naphthalene derivatives of the formula [I]: STR1 wherein R1 and R2 are the same or different and are each H, protected or unprotected OH, one of R3 and R4 is protected or unprotected hydroxymethyl, and the other is H, lower alkyl, or protected or unprotected hydroxymethyl, R5 and R6 are the same or different and are each H, substituted or unsubstituted lower alkyl, substituted or unsubstituted phenyl or protected or unprotected NH2, or both combine together with the adjacent N to form substituted or unsubstituted heterocyclic group, and pharmaceutically acceptable salts thereof, these compounds showing excellent bronchoconstriction inhibitory activity, and hence, being useful in the prophylaxis or treatment of asthma.
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Reference：
Isoquinoline – Wikipedia,
Isoquinoline | C9H1227N – PubChem