40208-71-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40208-71-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,2,0 and 8 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 40208-71:
(7*4)+(6*0)+(5*2)+(4*0)+(3*8)+(2*7)+(1*1)=77
77 % 10 = 7
So 40208-71-7 is a valid CAS Registry Number.