11,12-dicyano-2,5,8-tris(p-tolylsulfonyl)2,3,4,5,6,7,8,9-octahydro-1H-2,5,8-benzotriaza-cycloundecine is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 253168-39-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,3,1,6 and 8 respectively; the second part has 2 digits, 3 and 9 respectively. Calculate Digit Verification of CAS Registry Number 253168-39: (8*2)+(7*5)+(6*3)+(5*1)+(4*6)+(3*8)+(2*3)+(1*9)=137 137 % 10 = 7 So 253168-39-7 is a valid CAS Registry Number.