903504-44-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 903504-44-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,3,5,0 and 4 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 903504-44:
(8*9)+(7*0)+(6*3)+(5*5)+(4*0)+(3*4)+(2*4)+(1*4)=139
139 % 10 = 9
So 903504-44-9 is a valid CAS Registry Number.