15109-34-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 15109-34-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,1,0 and 9 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 15109-34:
(7*1)+(6*5)+(5*1)+(4*0)+(3*9)+(2*3)+(1*4)=79
79 % 10 = 9
So 15109-34-9 is a valid CAS Registry Number.