21223-62-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21223-62-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,2,2 and 3 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 21223-62:
(7*2)+(6*1)+(5*2)+(4*2)+(3*3)+(2*6)+(1*2)=61
61 % 10 = 1
So 21223-62-1 is a valid CAS Registry Number.