I-Salicylic acid (C7H6O3, 2-hydroxybenzoic acid): izinaliti ezde ezingenambala ezincibilika ku-156 °C. Yenziwa ngokushisa i-sodium phenolate eyomile ku-carbon dioxide futhi ihlanjululwe nge-hydrochloric acid (Kolbe; Gattermann 1914). Uma yenziwa i-acetyl, inika i-aspirin.