900449-42-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 900449-42-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,0,4,4 and 9 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 900449-42:
(8*9)+(7*0)+(6*0)+(5*4)+(4*4)+(3*9)+(2*4)+(1*2)=145
145 % 10 = 5
So 900449-42-5 is a valid CAS Registry Number.