254098-83-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 254098-83-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,4,0,9 and 8 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 254098-83:
(8*2)+(7*5)+(6*4)+(5*0)+(4*9)+(3*8)+(2*8)+(1*3)=154
154 % 10 = 4
So 254098-83-4 is a valid CAS Registry Number.