257293-77-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 257293-77-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,7,2,9 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 257293-77:
(8*2)+(7*5)+(6*7)+(5*2)+(4*9)+(3*3)+(2*7)+(1*7)=169
169 % 10 = 9
So 257293-77-9 is a valid CAS Registry Number.