22291-55-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22291-55-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,2,9 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 22291-55:
(7*2)+(6*2)+(5*2)+(4*9)+(3*1)+(2*5)+(1*5)=90
90 % 10 = 0
So 22291-55-0 is a valid CAS Registry Number.