55420-40-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55420-40-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,4,2 and 0 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 55420-40:
(7*5)+(6*5)+(5*4)+(4*2)+(3*0)+(2*4)+(1*0)=101
101 % 10 = 1
So 55420-40-1 is a valid CAS Registry Number.