Description 8-Amino-6-methoxyquinoline hydrobromide is a quinoline building block. It is formed during the synthesis of α-morpholino-β-(N-8-amino-6-methoxyquinoline)-benzylacetophenone.8-Amino-6-methoxyquinoline hydrobromide may be used as an amino component in a novel series of bladder-selective diaminocyclobutenedione potassium channel openers. It may also be used for the synthesis of 1-N-(6-methoxy-8-quinoyl)-4′-carboxyl-benzensulfonamide.