900454-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 900454-71-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,0,4,5 and 4 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 900454-71:
(8*9)+(7*0)+(6*0)+(5*4)+(4*5)+(3*4)+(2*7)+(1*1)=139
139 % 10 = 9
So 900454-71-9 is a valid CAS Registry Number.