19178-57-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19178-57-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,1,7 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 19178-57:
(7*1)+(6*9)+(5*1)+(4*7)+(3*8)+(2*5)+(1*7)=135
135 % 10 = 5
So 19178-57-5 is a valid CAS Registry Number.