77517-12-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77517-12-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,5,1 and 7 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 77517-12:
(7*7)+(6*7)+(5*5)+(4*1)+(3*7)+(2*1)+(1*2)=145
145 % 10 = 5
So 77517-12-5 is a valid CAS Registry Number.