(2-Nitronaphtho(2,1-b)furan-7-yl)carbamic acid methyl ester 125372-39-6 Carbamic acid, (2-nitronaphtho(2,1-b)furan-7-yl)-, methyl ester Methyl (2-nitronaphtho(2,1-b)furan-7-yl)carbamate