2,3,5,6-tetrahydroxycyclohexa-2,5-diene-1,4-dione is a fine chemical product from the brand RESEARCH-LAB FINE CHEM INDUSTRIES. It is also known as Tetrahydroxy-1,4-benzoquinone or THBQ or THQ.

• Molecular Formula: C6H4O6
• CAS Number: 5676-48-2
• Molecular Weight: 172.09 gmol1
• Quantity: 5 gm/Bottle

THQ can be synthesized from glyoxal or from myo-inositol (phytic acid), a natural compound widely present in plants. It forms an adduct with 4,4'-bipyridine in the 2:3 ratio.