12305-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 12305-89-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,3,0 and 5 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 12305-89:
(7*1)+(6*2)+(5*3)+(4*0)+(3*5)+(2*8)+(1*9)=74
74 % 10 = 4
So 12305-89-4 is a valid CAS Registry Number.