667913-57-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 667913-57-7 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 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 667913-57:
(8*6)+(7*6)+(6*7)+(5*9)+(4*1)+(3*3)+(2*5)+(1*7)=207
207 % 10 = 7
So 667913-57-7 is a valid CAS Registry Number.