664366-07-8

BB_NC-1665 (2,3,5-Trimethyl-7-oxo-7H-furo[3,2-g]-chromen-6-yl)acetic acid 2-{2,3,5-Trimethyl-7-oxo-7H-furo[3,2-g]chromen-6-yl}acetic acid 2-(2,3,5-trimethyl-7-oxo-6-pyrano[5,6-f]benzofuranyl)acetic acid 2-(2,3,5-trimethyl-7-oxopyrano[5,6-f][1]benzoxol-6-yl)acetic acid 7H-Furo[3,2-g][1]benzopyran-6-acetic acid, 2,3,5-trimethyl-7-oxo- 2-(2,3,5-trimethyl-7-oxo-pyrano[5,6-f]benzofuran-6-yl)acetic acid 2-(7-keto-2,3,5-trimethyl-pyrano[5,6-f]benzofuran-6-yl)acetic acid 2-(2,3,5-trimethyl-7-oxo-pyrano[5,6-f][1]benzoxol-6-yl)ethanoic acid