99903-43-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99903-43-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,9,0 and 3 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 99903-43:
(7*9)+(6*9)+(5*9)+(4*0)+(3*3)+(2*4)+(1*3)=182
182 % 10 = 2
So 99903-43-2 is a valid CAS Registry Number.