905557-69-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 905557-69-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,5,5,5 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 905557-69:
(8*9)+(7*0)+(6*5)+(5*5)+(4*5)+(3*7)+(2*6)+(1*9)=189
189 % 10 = 9
So 905557-69-9 is a valid CAS Registry Number.