2-Hydroxy-4-nitrobenzoic acid 4-10-00-00231 (Beilstein Handbook Reference) 4-Nitro-2-hydroxybenzoic acid 4-Nitro-salicylsaure [German] 4-Nitrosalicylic acid 619-19-2 BRN 2213722 Benzoic acid, 2-hydroxy-4-nitro- EINECS 210-584-0 NSC 882 Salicylic acid, 4-nitro- p-Nitrosalicylic acid