57969-77-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57969-77-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,9,6 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 57969-77:
(7*5)+(6*7)+(5*9)+(4*6)+(3*9)+(2*7)+(1*7)=194
194 % 10 = 4
So 57969-77-4 is a valid CAS Registry Number.