201596-16-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 201596-16-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,5,9 and 6 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 201596-16:
(8*2)+(7*0)+(6*1)+(5*5)+(4*9)+(3*6)+(2*1)+(1*6)=109
109 % 10 = 9
So 201596-16-9 is a valid CAS Registry Number.