75209-61-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 75209-61-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,2,0 and 9 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 75209-61:
(7*7)+(6*5)+(5*2)+(4*0)+(3*9)+(2*6)+(1*1)=129
129 % 10 = 9
So 75209-61-9 is a valid CAS Registry Number.