7-Bromo-1,2,3,4-tetrahydroisoquinoline is an intermediate used to prepare (isoquinolinylsulfonyl)benzoic acids as inhibitors of type 5 71-β-hydroxysteroid dehydrogenase AKR1C3. It is also used in the synthesis of 2-aminooctahydrocyclopentalene-3a-carboxamides as potent CCR2 antagonists.