2118-64-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2118-64-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,1 and 8 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 2118-64:
(6*2)+(5*1)+(4*1)+(3*8)+(2*6)+(1*4)=61
61 % 10 = 1
So 2118-64-1 is a valid CAS Registry Number.