16816-88-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16816-88-9 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 6 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 16816-88:
(7*1)+(6*6)+(5*8)+(4*1)+(3*6)+(2*8)+(1*8)=129
129 % 10 = 9
So 16816-88-9 is a valid CAS Registry Number.