1169-57-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1169-57-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,1,6 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1169-57:
(6*1)+(5*1)+(4*6)+(3*9)+(2*5)+(1*7)=79
79 % 10 = 9
So 1169-57-9 is a valid CAS Registry Number.