873420-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 873420-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,3,4,2 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 873420-55:
(8*8)+(7*7)+(6*3)+(5*4)+(4*2)+(3*0)+(2*5)+(1*5)=174
174 % 10 = 4
So 873420-55-4 is a valid CAS Registry Number.