#hydroxy_acid__hydroxyacid  any acid that has hydroxyl groups in addition to the hydroxyl group in the acid itself
  supertype:  #acid  any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
  subtype:  #hydroxybenzoic_acid  a crystalline derivative of benzoic acid
  subtype:  #juniperic_acid__junipericacid  a crystalline acid found in the exudations of some conifers
  subtype:  #salicylic_acid__salicylicacid__2-hydroxybenzoic_acid  a white crystalline substance with a bitter aftertaste; used as a fungicide or in making aspirin or dyes or perfumes
  subtype:  #tartaric_acid  an acid found in many fruits; used in soft drinks and confectionery and baking powder
     subtype:  #racemic_acid__racemicacid  the optically inactive form of tartaric acid that is often found in grape juice

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