667891-01-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 667891-01-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,8,9 and 1 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 667891-01:
(8*6)+(7*6)+(6*7)+(5*8)+(4*9)+(3*1)+(2*0)+(1*1)=212
212 % 10 = 2
So 667891-01-2 is a valid CAS Registry Number.