40421-87-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40421-87-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,4,2 and 1 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 40421-87:
(7*4)+(6*0)+(5*4)+(4*2)+(3*1)+(2*8)+(1*7)=82
82 % 10 = 2
So 40421-87-2 is a valid CAS Registry Number.