816-67-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 816-67-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,1 and 6 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 816-67:
(5*8)+(4*1)+(3*6)+(2*6)+(1*7)=81
81 % 10 = 1
So 816-67-1 is a valid CAS Registry Number.