16817-18-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16817-18-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,8,1 and 7 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 16817-18:
(7*1)+(6*6)+(5*8)+(4*1)+(3*7)+(2*1)+(1*8)=118
118 % 10 = 8
So 16817-18-8 is a valid CAS Registry Number.