251998-89-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 251998-89-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,9,9 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 251998-89:
(8*2)+(7*5)+(6*1)+(5*9)+(4*9)+(3*8)+(2*8)+(1*9)=187
187 % 10 = 7
So 251998-89-7 is a valid CAS Registry Number.