6662-55-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6662-55-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,6,6 and 2 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 6662-55:
(6*6)+(5*6)+(4*6)+(3*2)+(2*5)+(1*5)=111
111 % 10 = 1
So 6662-55-1 is a valid CAS Registry Number.
InChI:InChI=1/C6H3Cl2NO2.Na/c7-3-1-2-4(8)9-5(3)6(10)11;/h1-2H,(H,10,11);/q;+1/p-1