71840-25-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71840-25-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,8,4 and 0 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 71840-25:
(7*7)+(6*1)+(5*8)+(4*4)+(3*0)+(2*2)+(1*5)=120
120 % 10 = 0
So 71840-25-0 is a valid CAS Registry Number.