21922-59-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21922-59-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,2 and 2 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 21922-59:
(7*2)+(6*1)+(5*9)+(4*2)+(3*2)+(2*5)+(1*9)=98
98 % 10 = 8
So 21922-59-8 is a valid CAS Registry Number.