78816-66-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78816-66-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,8,1 and 6 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 78816-66:
(7*7)+(6*8)+(5*8)+(4*1)+(3*6)+(2*6)+(1*6)=177
177 % 10 = 7
So 78816-66-7 is a valid CAS Registry Number.