1616061-20-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1616061-20-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,6,0,6 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1616061-20:
(9*1)+(8*6)+(7*1)+(6*6)+(5*0)+(4*6)+(3*1)+(2*2)+(1*0)=131
131 % 10 = 1
So 1616061-20-1 is a valid CAS Registry Number.