257938-78-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 257938-78-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,7,9,3 and 8 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 257938-78:
(8*2)+(7*5)+(6*7)+(5*9)+(4*3)+(3*8)+(2*7)+(1*8)=196
196 % 10 = 6
So 257938-78-6 is a valid CAS Registry Number.