trans-2,3,5-Trimethyl-6-(5'-carboxy-3'-methyl-2'-pentenyl)-1,4-benzoquinone
2,3,5-trimethyl-6-(5'-carboxy-3'-methylpentyl)-1,4-benzoquinone
2,3-dimethoxy-5-methyl-6-(5'-carboxy-3'-methylpentyl)-1,4-benzoquinone
2,3,5-trimethyl-6-(5',5'-dicarboxy-3'-methylpentyl)-1,4-benzoquinone
trans-2,3,5-Trimethyl-6-(5',5'-dicarboxy-3'-methyl-2'-pentenyl)-1,4-benzoquinone