2-Nitronaphtho(2,1-b)furan-7-acetic acid methyl ester 2-Nitronaphtho(2,1-b)furan-7-methylacetate 92262-82-3 BRN 5599878 NAPHTHO(2,1-b)FURAN-7-ACETIC ACID, 2-NITRO-, METHYL ESTER R 7432