But-3-enoic anhydride, also known as maleic anhydride, is a chemical compound with the formula C4H4O3. It is a colorless, crystalline solid that is an important industrial chemical, primarily used in the production of unsaturated polyester resins, alkyd resins, and various other chemicals. Maleic anhydride is synthesized through the oxidation of benzene or butane and is known for its ability to react with various compounds, such as amines and alcohols, to form esters and amides. It is also used as a chemical intermediate in the production of lubricants, plasticizers, and pharmaceuticals. Due to its reactivity and versatility, but-3-enoic anhydride plays a significant role in the chemical industry.
The CAS Registry Mumber 1760-48-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,6 and 0 respectively; the second part has 2 digits, 4 and 8 respectively. Calculate Digit Verification of CAS Registry Number 1760-48: (6*1)+(5*7)+(4*6)+(3*0)+(2*4)+(1*8)=81 81 % 10 = 1 So 1760-48-1 is a valid CAS Registry Number.