2-Nitro-5-chloronaphtho(1,2-b)furan 5-Chloro-2-nitronaphtho(1,2-b)furan 75965-77-4 BRN 5748445 NAPHTHO(1,2-b)FURAN, 5-CHLORO-2-NITRO- NSC 329227 R 7134