Tiemonium iodide is an

antimuscarinic A muscarinic receptor antagonist (MRA) is a type of anticholinergic agent that blocks the activity of the muscarinic acetylcholine receptor. The muscarinic receptor is a protein involved in the transmission of signals through certain parts of th ...

. It is poorly absorbed from the gut. The active

moiety Moiety may refer to: Chemistry * Moiety (chemistry), a part or functional group of a molecule ** Moiety conservation, conservation of a subgroup in a chemical species Anthropology * Moiety (kinship), either of two groups into which a society is ...

is tiemonium, a quaternary ammonium cation.

References

Muscarinic antagonists Quaternary ammonium compounds Thiophenes Morpholines Iodides Tertiary alcohols {{gastrointestinal-drug-stub