905309-55-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 905309-55-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,5,3,0 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 905309-55:
(8*9)+(7*0)+(6*5)+(5*3)+(4*0)+(3*9)+(2*5)+(1*5)=159
159 % 10 = 9
So 905309-55-9 is a valid CAS Registry Number.