Synonyms: Plastoquinone;2,3-dimethyl-5-(3,7,11,14,19,23,27,31,35-nonamethylhexatriaconta-2,6,10,14,18,22,26,30,34-nonaenyl)cyclohexa-2,5-diene-1,4-dione;2,3-Dimethyl-5-[(2E,6E,10E,14E,18E,22E,26E,30E)-3,7,11,15,19,23,27,31,35-nonamethyl-2,6,10,14,18,22,26,30,34-hexatriacontanonenyl]-2,5-cyclohexadiene-1,4-dione;Kofler's quinone;Plastoquinone-9;PQA;Q-254