103203-50-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 103203-50-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,2,0 and 3 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 103203-50:
(8*1)+(7*0)+(6*3)+(5*2)+(4*0)+(3*3)+(2*5)+(1*0)=55
55 % 10 = 5
So 103203-50-5 is a valid CAS Registry Number.