74109-25-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74109-25-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,1,0 and 9 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 74109-25:
(7*7)+(6*4)+(5*1)+(4*0)+(3*9)+(2*2)+(1*5)=114
114 % 10 = 4
So 74109-25-4 is a valid CAS Registry Number.