1-(1-Methylethyl)-2-nitronaphtho(2,1-b)furan 1-Isopropyl-2-nitronaphtho(2,1-b)furan 95454-92-5 BRN 5562815 NAPHTHO(2,1-b)FURAN, 1-(1-METHYLETHYL)-2-NITRO- R 7501