257949-76-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 257949-76-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,7,9,4 and 9 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 257949-76:
(8*2)+(7*5)+(6*7)+(5*9)+(4*4)+(3*9)+(2*7)+(1*6)=201
201 % 10 = 1
So 257949-76-1 is a valid CAS Registry Number.