1,2,3,4,5,6-Hexachloro-1-fluoro-cyclohexane, also known as lindane, is a chemical compound with the formula C6H6Cl6F. It is a white crystalline substance that is derived from hexachlorocyclohexane (HCH), a group of industrial chemicals used as pesticides. Lindane is a gamma-isomer of HCH, which means it has six chlorine atoms and one fluorine atom attached to a cyclohexane ring. Due to its effectiveness in controlling various pests, it has been widely used in agriculture and for treating lice and scabies in humans. However, concerns about its potential health risks and environmental persistence have led to its restriction or ban in many countries. Despite its effectiveness, the use of lindane is now limited due to its classification as a persistent organic pollutant, which can accumulate in the environment and pose risks to human health and wildlife.
The CAS Registry Mumber 432-72-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,3 and 2 respectively; the second part has 2 digits, 7 and 2 respectively. Calculate Digit Verification of CAS Registry Number 432-72: (5*4)+(4*3)+(3*2)+(2*7)+(1*2)=54 54 % 10 = 4 So 432-72-4 is a valid CAS Registry Number.