133851-52-2

1-(tert-Butoxycarbonyl)-2-indolinecarboxylic Acid is used to prepare benzopyranyl indoline analogs as cardioselective anti-ischemic ATP-sensitive potassium channel openers. It is also used in the synthesis of 1,2,3,4-tetrahydroisoquinoline derivatives as potent and selective M2 muscarinic receptor antagonists.