5H-Benzocycloheptene-5-propanoic acid, 6,7,8,9-tetrahydro-6-oxo-2,3,4-trimethoxy- 6,7,8,9-Tetrahydro-6-oxo-2,3,4-trimethoxy-5H-benzocycloheptene-5-propanoic acid 6-Oxo-2,3,4-trimethoxy-6,7,8,9-tetrahydro-5H-benzocycloheptene-5-propanoic acid 972-63-4 BRN 1662704 beta-(6-Oxo-2,3,4-trimethoxybenzocycloheptan-5-yl)propionic acid