780-16-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 780-16-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,8 and 0 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 780-16:
(5*7)+(4*8)+(3*0)+(2*1)+(1*6)=75
75 % 10 = 5
So 780-16-5 is a valid CAS Registry Number.