40022-71-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40022-71-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,0,2 and 2 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 40022-71:
(7*4)+(6*0)+(5*0)+(4*2)+(3*2)+(2*7)+(1*1)=57
57 % 10 = 7
So 40022-71-7 is a valid CAS Registry Number.