81137-66-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81137-66-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,1,3 and 7 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 81137-66:
(7*8)+(6*1)+(5*1)+(4*3)+(3*7)+(2*6)+(1*6)=118
118 % 10 = 8
So 81137-66-8 is a valid CAS Registry Number.