((2-Nitronaphtho(2,1-b)furan-7-yl)oxy)acetic acid ethyl ester 2-Nitro-7-((ethoxycarbonyl)methoxy)naphtho(2,1-b)furan 92262-83-4 ACETIC ACID, ((2-NITRONAPHTHO(2,1-b)FURAN-7-YL)OXY)-, ETHYL ESTER BRN 5613977 R 7544