77515-03-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77515-03-8 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 5 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 77515-03:
(7*7)+(6*7)+(5*5)+(4*1)+(3*5)+(2*0)+(1*3)=138
138 % 10 = 8
So 77515-03-8 is a valid CAS Registry Number.