40201-80-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40201-80-7 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 1 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 40201-80:
(7*4)+(6*0)+(5*2)+(4*0)+(3*1)+(2*8)+(1*0)=57
57 % 10 = 7
So 40201-80-7 is a valid CAS Registry Number.