22443-91-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22443-91-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,4,4 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 22443-91:
(7*2)+(6*2)+(5*4)+(4*4)+(3*3)+(2*9)+(1*1)=90
90 % 10 = 0
So 22443-91-0 is a valid CAS Registry Number.