16221-38-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16221-38-8 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 1 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 16221-38:
(7*1)+(6*6)+(5*2)+(4*2)+(3*1)+(2*3)+(1*8)=78
78 % 10 = 8
So 16221-38-8 is a valid CAS Registry Number.