109562-90-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109562-90-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,5,6 and 2 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 109562-90:
(8*1)+(7*0)+(6*9)+(5*5)+(4*6)+(3*2)+(2*9)+(1*0)=135
135 % 10 = 5
So 109562-90-5 is a valid CAS Registry Number.