42117-28-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42117-28-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,1,1 and 7 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 42117-28:
(7*4)+(6*2)+(5*1)+(4*1)+(3*7)+(2*2)+(1*8)=82
82 % 10 = 2
So 42117-28-2 is a valid CAS Registry Number.