25121-89-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 25121-89-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,1,2 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 25121-89:
(7*2)+(6*5)+(5*1)+(4*2)+(3*1)+(2*8)+(1*9)=85
85 % 10 = 5
So 25121-89-5 is a valid CAS Registry Number.