173913-77-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 173913-77-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,9,1 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 173913-77:
(8*1)+(7*7)+(6*3)+(5*9)+(4*1)+(3*3)+(2*7)+(1*7)=154
154 % 10 = 4
So 173913-77-4 is a valid CAS Registry Number.