75317-42-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 75317-42-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,3,1 and 7 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 75317-42:
(7*7)+(6*5)+(5*3)+(4*1)+(3*7)+(2*4)+(1*2)=129
129 % 10 = 9
So 75317-42-9 is a valid CAS Registry Number.