22521-90-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22521-90-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,5,2 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 22521-90:
(7*2)+(6*2)+(5*5)+(4*2)+(3*1)+(2*9)+(1*0)=80
80 % 10 = 0
So 22521-90-0 is a valid CAS Registry Number.