23998-09-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23998-09-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,9,9 and 8 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 23998-09:
(7*2)+(6*3)+(5*9)+(4*9)+(3*8)+(2*0)+(1*9)=146
146 % 10 = 6
So 23998-09-6 is a valid CAS Registry Number.