Hibasaeure, also known as 4-hydroxyisophthalic acid, is an organic compound with the chemical formula C8H6O5. It is a white crystalline solid that is soluble in water and serves as an important intermediate in the production of various chemicals, including polymers and pharmaceuticals. Hibasaeure is synthesized through the reaction of phthalic anhydride with water, and it is used in the manufacture of polyethylene terephthalate (PET), a widely used plastic material. Additionally, it is employed in the synthesis of certain dyes, pigments, and other specialty chemicals. Its versatility and applications make Hibasaeure a significant chemical in the chemical industry.
The CAS Registry Mumber 7643-55-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,4 and 3 respectively; the second part has 2 digits, 5 and 5 respectively. Calculate Digit Verification of CAS Registry Number 7643-55: (6*7)+(5*6)+(4*4)+(3*3)+(2*5)+(1*5)=112 112 % 10 = 2 So 7643-55-2 is a valid CAS Registry Number.