77117-06-7
3-(1-Carboxy-2-phenyl-ethyl)-benzofuran-2-carboxylic acid
77116-99-5
1-oxo-1H-benzofuro<4,3-d>indeno<2',1':5,6>pyran

参考文献

Chatterjea, J. N.; Sahai, Radhika Pati Journal of the Indian Chemical Society, 1980, vol. 57, # 12 p. 1163 - 1165