1-Methyl-2-nitro-7-methoxynaphtho(2,1-b)furan 7-Methoxy-1-methyl-2-nitronaphtho(2,1-b)furan 86539-71-1 BRN 5062374 NAPHTHO(2,1-b)FURAN, 7-METHOXY-1-METHYL-2-NITRO- R 7372