55720-20-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55720-20-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,7,2 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 55720-20:
(7*5)+(6*5)+(5*7)+(4*2)+(3*0)+(2*2)+(1*0)=112
112 % 10 = 2
So 55720-20-2 is a valid CAS Registry Number.