662164-81-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 662164-81-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,2,1,6 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 662164-81:
(8*6)+(7*6)+(6*2)+(5*1)+(4*6)+(3*4)+(2*8)+(1*1)=160
160 % 10 = 0
So 662164-81-0 is a valid CAS Registry Number.