2,2,3,3,3-Pentachlor-1,1-bis-(4-hydroxy-phenyl)-propan, also known as Bisphenol A (BPA), is an organic compound with the chemical formula C15H16Cl2O2. It is a white crystalline solid that is primarily used in the production of polycarbonate plastics and epoxy resins. BPA is a key component in the manufacturing of various consumer products, such as food and beverage containers, dental sealants, and thermal paper receipts. However, it has been a subject of concern due to its potential endocrine-disrupting properties and health risks associated with long-term exposure, leading to restrictions and bans in certain applications in some countries.
The CAS Registry Mumber 899-08-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,9 and 9 respectively; the second part has 2 digits, 0 and 8 respectively. Calculate Digit Verification of CAS Registry Number 899-08: (5*8)+(4*9)+(3*9)+(2*0)+(1*8)=111 111 % 10 = 1 So 899-08-1 is a valid CAS Registry Number.