502171-17-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 502171-17-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,2,1,7 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 502171-17:
(8*5)+(7*0)+(6*2)+(5*1)+(4*7)+(3*1)+(2*1)+(1*7)=97
97 % 10 = 7
So 502171-17-7 is a valid CAS Registry Number.