6-Methoxy-4-quinolinecarboxylic Acid is a derivative of 4-quinolinecarboxylic acids, which is a potential antitumor (such as leukemia) and antiviral agent. It also has the potential to be used as immunosuppressive reagent as well as for the treatment of skin and epithelial diseases.
https://www.sigmaaldrich.com/catalog/product/aldrich/174823?lang=en®ion=US
https://link.springer.com/article/10.1007/s11094-009-0187-1
https://patents.google.com/patent/US5084462A/en
https://patents.google.com/patent/US4861783A/en
6-methoxyquinoline-4-carboxylic Acid is used in the preparation of tetrahydroisoquinoline amides as multidrug resistance reversers.