2-Acetyl-7-methoxynaphtho(2,1-b)furan 77523-56-9 BRN 5532937 Ethanone, 1-(7-methoxynaphtho(2,1-b)furan-2-yl)- KETONE, 7-METHOXYNAPHTHO(2,1-b)FURAN-2-YL METHYL R 7237