2-Hydroxy-7-nitrofluorene 4-06-00-04847 (Beilstein Handbook Reference) 6633-40-5 7-Hydroxy-2-nitrofluorene 7-Nitrofluoren-2-ol BRN 2532810 CCRIS 8020 FLUOREN-2-OL, 7-NITRO- NSC 56690