502173-25-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 502173-25-3 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 3 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 502173-25:
(8*5)+(7*0)+(6*2)+(5*1)+(4*7)+(3*3)+(2*2)+(1*5)=103
103 % 10 = 3
So 502173-25-3 is a valid CAS Registry Number.