16222-21-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16222-21-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,2,2 and 2 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 16222-21:
(7*1)+(6*6)+(5*2)+(4*2)+(3*2)+(2*2)+(1*1)=72
72 % 10 = 2
So 16222-21-2 is a valid CAS Registry Number.