216865-97-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 216865-97-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,6,8,6 and 5 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 216865-97:
(8*2)+(7*1)+(6*6)+(5*8)+(4*6)+(3*5)+(2*9)+(1*7)=163
163 % 10 = 3
So 216865-97-3 is a valid CAS Registry Number.