239091-89-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 239091-89-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,9,0,9 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 239091-89:
(8*2)+(7*3)+(6*9)+(5*0)+(4*9)+(3*1)+(2*8)+(1*9)=155
155 % 10 = 5
So 239091-89-5 is a valid CAS Registry Number.