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Table 24 Hydrogenated heterocyclic parent hydrides.

Type 1-Unlimited substitution

Chromane
(Chalcogen analogues are named using the prefixes "thio-", "seleno-" and "telluro-".)

Imidazolidine
Indoline

Isochromane
(Chalcogen analogues are named using the prefixes "thio-", "seleno-" and "telluro-".)

Isoindoline

Morpholine
(Chalcogen analogues are named using the prefixes "thio-", "seleno-" and "telluro-".)

Piperazine
Piperidine

Pyrazolidine
Pyrrolidine

Quinuclidine

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