The correct IUPAC name of the compound Cl₃C– CH₂CHO
 

Any organic compound's IUPAC name fundamentally consists of three elements, i.e. It indicates how many carbon atoms are in the organic molecule's parent chain, which is the longest continuous chain of carbon atoms conceivable when the functional group and numerous bonds are included. By applying these rules of nomenclature,  we can find out the name of the given compound, Cl₃C– CH₂CHO to be 3,3,3-Trichloro propanal.