2,2,4,5,6,6-hexachloro-3-methyl-cyclohex-3-enone, commonly known as alpha-hexachlorocyclohexane or lindane, is an organochlorine compound that belongs to the hexachlorocyclohexane family. It is a white crystalline solid with a chemical formula of C6H6Cl6O. Lindane is a synthetic pesticide that has been widely used as an insecticide to control various pests, including lice, mites, and ticks. Due to its effectiveness and low mammalian toxicity, it was once considered a safer alternative to other hexachlorocyclohexane isomers. However, concerns about its environmental persistence, potential for bioaccumulation, and health risks have led to its restriction or ban in many countries. Despite its historical use, lindane is now recognized for its negative impacts on the environment and human health, and efforts are being made to phase out its use globally.
The CAS Registry Mumber 13821-80-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,8,2 and 1 respectively; the second part has 2 digits, 8 and 0 respectively. Calculate Digit Verification of CAS Registry Number 13821-80: (7*1)+(6*3)+(5*8)+(4*2)+(3*1)+(2*8)+(1*0)=92 92 % 10 = 2 So 13821-80-2 is a valid CAS Registry Number.