131791-54-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131791-54-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,7,9 and 1 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 131791-54:
(8*1)+(7*3)+(6*1)+(5*7)+(4*9)+(3*1)+(2*5)+(1*4)=123
123 % 10 = 3
So 131791-54-3 is a valid CAS Registry Number.