1791-59-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1791-59-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,9 and 1 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1791-59:
(6*1)+(5*7)+(4*9)+(3*1)+(2*5)+(1*9)=99
99 % 10 = 9
So 1791-59-9 is a valid CAS Registry Number.