- A derivative of tetrahydro-quinoline (C10H13NO). It had been made use of as an antipyretic.
- A pale buff or white crystalline alkaloid produced by quinoline, and used as an antipyretic in medication.
- A whitish crystalline dust (C10H13ON.HCl. + H2O), bitter-salt in flavor, soluble in liquid and alcoholic beverages, and used in medication as an antipyretic.