257883-97-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 257883-97-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,7,8,8 and 3 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 257883-97:
(8*2)+(7*5)+(6*7)+(5*8)+(4*8)+(3*3)+(2*9)+(1*7)=199
199 % 10 = 9
So 257883-97-9 is a valid CAS Registry Number.