The name is derived from that of quinic acid (with the suffix '-one' indicating a ketone), since it is one of the compounds obtained upon oxidation of quinic acid. Other important examples are 1,2-benzoquinone ( ortho-quinone), 1,4-naphthoquinone and 9,10-anthraquinone. The archetypical member of the class is 1,4-benzoquinone or cyclohexadienedione, often called simply 'quinone' (thus the name of the class). The quinones are a class of organic compounds that are formally 'derived from aromatic compounds by conversion of an even number of –CH= groups into –C(=O)– groups with any necessary rearrangement of double bonds, resulting in 'a fully conjugated cyclic dione structure'. Not to be confused with Quiñones, Quinine, or Hydroquinone.

IMMEDIATELY transport the victim to a hospital.'Quinones' redirects here. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used if not available, use a level of protection greater than or equal to that advised under Protective Clothing. Provide proper respiratory protection to rescuers entering an unknown atmosphere. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. INHALATION: IMMEDIATELY leave the contaminated area take deep breaths of fresh air. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment. Gently wash all affected skin areas thoroughly with soap and water. SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. EYES: First check the victim for contact lenses and remove if present.

1 4 naphthoquinone heat of combustion