200711-45-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 200711-45-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,0,7,1 and 1 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 200711-45:
(8*2)+(7*0)+(6*0)+(5*7)+(4*1)+(3*1)+(2*4)+(1*5)=71
71 % 10 = 1
So 200711-45-1 is a valid CAS Registry Number.