109258-61-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109258-61-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,2,5 and 8 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 109258-61:
(8*1)+(7*0)+(6*9)+(5*2)+(4*5)+(3*8)+(2*6)+(1*1)=129
129 % 10 = 9
So 109258-61-9 is a valid CAS Registry Number.