201157-01-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 201157-01-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,1,5 and 7 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 201157-01:
(8*2)+(7*0)+(6*1)+(5*1)+(4*5)+(3*7)+(2*0)+(1*1)=69
69 % 10 = 9
So 201157-01-9 is a valid CAS Registry Number.