42417-31-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42417-31-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,4,1 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 42417-31:
(7*4)+(6*2)+(5*4)+(4*1)+(3*7)+(2*3)+(1*1)=92
92 % 10 = 2
So 42417-31-2 is a valid CAS Registry Number.