C6H4O4

The molecular formula C₆H₄O₄ may refer to:

• Coumalic acid
• Dihydroxybenzoquinones
  • 2,3-Dihydroxy-1,4-benzoquinone
  • 2,5-Dihydroxy-1,4-benzoquinone
  • 2,6-Dihydroxy-1,4-benzoquinone
  • 3,4-Dihydroxy-1,2-benzoquinone
  • 3,5-Dihydroxy-1,2-benzoquinone
  • 3,6-Dihydroxy-1,2-benzoquinone
  • 4,5-Dihydroxy-1,2-benzoquinone
• 5-Carboxyfurfuraldehyde
• 2-Furylglyoxylic acid
• 3-Furylglyoxylic acid

See also

• Hydroxybenzoquinone