42089-78-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42089-78-1 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 9 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 42089-78:
(7*4)+(6*2)+(5*0)+(4*8)+(3*9)+(2*7)+(1*8)=121
121 % 10 = 1
So 42089-78-1 is a valid CAS Registry Number.