201997-27-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 201997-27-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,9,9 and 7 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 201997-27:
(8*2)+(7*0)+(6*1)+(5*9)+(4*9)+(3*7)+(2*2)+(1*7)=135
135 % 10 = 5
So 201997-27-5 is a valid CAS Registry Number.