75503-56-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 75503-56-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,5,0 and 3 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 75503-56:
(7*7)+(6*5)+(5*5)+(4*0)+(3*3)+(2*5)+(1*6)=129
129 % 10 = 9
So 75503-56-9 is a valid CAS Registry Number.