77111-78-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77111-78-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,1,1 and 1 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 77111-78:
(7*7)+(6*7)+(5*1)+(4*1)+(3*1)+(2*7)+(1*8)=125
125 % 10 = 5
So 77111-78-5 is a valid CAS Registry Number.