23099-98-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23099-98-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,0,9 and 9 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 23099-98:
(7*2)+(6*3)+(5*0)+(4*9)+(3*9)+(2*9)+(1*8)=121
121 % 10 = 1
So 23099-98-1 is a valid CAS Registry Number.