4515-17-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4515-17-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,5,1 and 5 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 4515-17:
(6*4)+(5*5)+(4*1)+(3*5)+(2*1)+(1*7)=77
77 % 10 = 7
So 4515-17-7 is a valid CAS Registry Number.