22969-57-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22969-57-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,9,6 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 22969-57:
(7*2)+(6*2)+(5*9)+(4*6)+(3*9)+(2*5)+(1*7)=139
139 % 10 = 9
So 22969-57-9 is a valid CAS Registry Number.