  A classification of currents with respect to C-operation admits the existence
of C-noninvariant types of Dirac fermions. Among them one can meet an
electroweakly charged C-antisymmetrical leptons, the mass of which includes the
electric and weak components responsible for the existence of their anapole
charge, charge radius and electric dipole moment. Such connections can
constitute the paraleptons of axial-vector currents, for example, at the
interactions with field of spinless nuclei of true neutrality. We derive the
united equations which relate the structural parts of mass to anapole, charge
radius and electric dipole of any truly neutral lepton in the framework of
flavour symmetry. Thereby, they establish the C-odd nature of leptons and
fields at the level of constancy law of the size implied from the
multiplication of a weak mass of C-antisymmetrical lepton by its electric mass.
Therefore, all leptons of C-antisymmetricality regardless of the difference in
masses of an axial-vector character, have the same anapole with his radius as
well as an equal electric dipole. Their analysis together with measured value
of an electric dipole moment of lepton gives the right to interpret not only
the existence of truly neutral types of leptons and fields but also the
availability of mass structure in them as the one of earlier laboratory facts.
