257945-23-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 257945-23-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,7,9,4 and 5 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 257945-23:
(8*2)+(7*5)+(6*7)+(5*9)+(4*4)+(3*5)+(2*2)+(1*3)=176
176 % 10 = 6
So 257945-23-6 is a valid CAS Registry Number.