61809-71-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 61809-71-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,8,0 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 61809-71:
(7*6)+(6*1)+(5*8)+(4*0)+(3*9)+(2*7)+(1*1)=130
130 % 10 = 0
So 61809-71-0 is a valid CAS Registry Number.