Tokens in this section are looped through for each bond in the chemical component

Token Definition Example
_chem_comp_bond.comp_id Same as _chem_comp.id HYP
_chem_comp_bond.atom_id_1 The ID of the first of the two atoms that define the bond. N
_chem_comp_bond.atom_id_2 The ID of the second of the two atoms that define the bond. CA
_chem_comp_bond.value_order The bond order of the chemical bond associated with the specified atoms. SING
_chem_comp_bond.pdbx_aromatic_flag Defines aromatic bonds. Y or N
_chem_comp_bond.pdbx_stereo_config Defines stereochemical bonds. Y or N
_chem_comp_bond.pdbx_ordinal Ordinal index for the component bond list. 1 (integer)