833454-20-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 833454-20-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,3,3,4,5 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 833454-20:
(8*8)+(7*3)+(6*3)+(5*4)+(4*5)+(3*4)+(2*2)+(1*0)=159
159 % 10 = 9
So 833454-20-9 is a valid CAS Registry Number.