42163-65-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42163-65-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,1,6 and 3 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 42163-65:
(7*4)+(6*2)+(5*1)+(4*6)+(3*3)+(2*6)+(1*5)=95
95 % 10 = 5
So 42163-65-5 is a valid CAS Registry Number.