42081-22-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42081-22-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,0,8 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 42081-22:
(7*4)+(6*2)+(5*0)+(4*8)+(3*1)+(2*2)+(1*2)=81
81 % 10 = 1
So 42081-22-1 is a valid CAS Registry Number.