153109-56-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 153109-56-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,3,1,0 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 153109-56:
(8*1)+(7*5)+(6*3)+(5*1)+(4*0)+(3*9)+(2*5)+(1*6)=109
109 % 10 = 9
So 153109-56-9 is a valid CAS Registry Number.