200-71-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 200-71-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 2,0 and 0 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 200-71:
(5*2)+(4*0)+(3*0)+(2*7)+(1*1)=25
25 % 10 = 5
So 200-71-5 is a valid CAS Registry Number.