(2-Nitronaphtho(2,1-b)furan-7-yl)carbamothioic acid O-ethyl ester 125372-45-4 Carbamothioic acid, (2-nitronaphtho(2,1-b)furan-7-yl)-, O-ethyl ester O-Ethyl (2-nitronaphtho(2,1-b)furan-7-yl)carbamothioate