400781-17-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 400781-17-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,0,7,8 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 400781-17:
(8*4)+(7*0)+(6*0)+(5*7)+(4*8)+(3*1)+(2*1)+(1*7)=111
111 % 10 = 1
So 400781-17-1 is a valid CAS Registry Number.