15309-44-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 15309-44-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,3,0 and 9 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 15309-44:
(7*1)+(6*5)+(5*3)+(4*0)+(3*9)+(2*4)+(1*4)=91
91 % 10 = 1
So 15309-44-1 is a valid CAS Registry Number.