667914-21-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 667914-21-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,9,1 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 667914-21:
(8*6)+(7*6)+(6*7)+(5*9)+(4*1)+(3*4)+(2*2)+(1*1)=198
198 % 10 = 8
So 667914-21-8 is a valid CAS Registry Number.