253440-98-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 253440-98-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,3,4,4 and 0 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 253440-98:
(8*2)+(7*5)+(6*3)+(5*4)+(4*4)+(3*0)+(2*9)+(1*8)=131
131 % 10 = 1
So 253440-98-1 is a valid CAS Registry Number.