178759-57-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 178759-57-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,7,5 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 178759-57:
(8*1)+(7*7)+(6*8)+(5*7)+(4*5)+(3*9)+(2*5)+(1*7)=204
204 % 10 = 4
So 178759-57-4 is a valid CAS Registry Number.