orthonym.data.halogen_ring_parents

Note

Internal API. Names and behaviour may change between releases.

Benzoheterocycle parents with a ring halogen in the lambda state that the Blue Book prints as a PIN.

rules/halogen_ring_fusion.py builds the benzo name of any benzene ring fused to a five- to seven-membered heteromonocycle with a ring iodine, the Blue Book). A name is labelled a preferred IUPAC name only on a parent listed here: the book prints a (PIN) example on that ring system, with its lambda token, its hydrogen and its locants, so the construction of the name is attested and not only derived. Every other parent (the six-membered 1,2-benziodoxine, the isomeric 2,1-benziodoxole, a benziodazole, the lambda5 states) is a valid systematic name that the module records as not the PIN, so the default tier declines it and the best-effort tier ships it.

Key: the bare mancude parent exactly as halogen_ring_fusion.benzo_hw_name spells it. Value: (rule heading, the Blue Book line, the example as the book prints it). OCR of the benziodole line was cross-checked against the QMUL copy of (https://iupac.qmul.ac.uk/BlueBook/P6a.html), which prints ‘1H-1λ3-benziodole (PIN)’ and ‘1-methoxy-1λ3,2-benziodoxol-3(1H)-one (PIN)’.