109742-44-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109742-44-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,7,4 and 2 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 109742-44:
(8*1)+(7*0)+(6*9)+(5*7)+(4*4)+(3*2)+(2*4)+(1*4)=131
131 % 10 = 1
So 109742-44-1 is a valid CAS Registry Number.