(1S,3aS,4S,7R,7aR)-4,5,6,7,8,8-Hexachloro-1-(2,4-dichloro-phenyl)-3a,4,7,7a-tetrahydro-1H-4,7-methano-indene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 81759-61-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,5 and 9 respectively; the second part has 2 digits, 6 and 1 respectively. Calculate Digit Verification of CAS Registry Number 81759-61: (7*8)+(6*1)+(5*7)+(4*5)+(3*9)+(2*6)+(1*1)=157 157 % 10 = 7 So 81759-61-7 is a valid CAS Registry Number.