Bis-<3-ethinyl-4-methyl-phenyl>-methan, also known as bisphenol A (BPA), is an organic compound with the chemical formula C15H16O2. 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 receipt paper. 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 increased scrutiny and regulations in many countries.
The CAS Registry Mumber 6140-86-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,1,4 and 0 respectively; the second part has 2 digits, 8 and 6 respectively. Calculate Digit Verification of CAS Registry Number 6140-86: (6*6)+(5*1)+(4*4)+(3*0)+(2*8)+(1*6)=79 79 % 10 = 9 So 6140-86-9 is a valid CAS Registry Number.