42491-41-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42491-41-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,4,9 and 1 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 42491-41:
(7*4)+(6*2)+(5*4)+(4*9)+(3*1)+(2*4)+(1*1)=108
108 % 10 = 8
So 42491-41-8 is a valid CAS Registry Number.