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Methylscopolamine bromide

Clinical data
Trade names	Pamine, Extendryl, AlleRx, Rescon
AHFS/Drugs.com	Monograph
MedlinePlus	a606008
ATC code	A03BB03 (WHO) S01FA03 (WHO)
Pharmacokinetic data
Elimination half-life	3–4 hrs
Identifiers
IUPAC name (1R,2S,4R,5S,7R)-{oxy}-9,9-dimethyl-3-oxa-9-azoniatricyclononane
CAS Number	155-41-9
PubChem CID	441342
DrugBank	DB00462
ChemSpider	21106347
UNII	RTN51LK7WL
KEGG	D00715
ChEMBL	ChEMBL376897
PDB ligand	3C0 (PDBe, RCSB PDB)
CompTox Dashboard (EPA)	DTXSID2040608
ECHA InfoCard	100.005.314
Chemical and physical data
Formula	C18H24NO4
Molar mass	318.388 g/mol (398.297 g/mol with bromide) g·mol
3D model (JSmol)	Interactive image
SMILES OC(c1ccccc1)C(=O)O2C3(C)(C)(C2)4O34
InChI InChI=1S/C18H24NO4/c1-19(2)14-8-12(9-15(19)17-16(14)23-17)22-18(21)13(10-20)11-6-4-3-5-7-11/h3-7,12-17,20H,8-10H2,1-2H3/q+1/t12-,13-,14-,15+,16-,17+/m1/s1 Key:LZCOQTDXKCNBEE-IKIFYQGPSA-N
(verify)

Methylscopolamine or methscopolamine, usually provided as the bromide or nitrate salt, is an oral medication used along with other medications to treat peptic ulcers by reducing stomach acid secretion. Proton pump inhibitors and antihistamine medications have made this use obsolete. It can also be used for stomach or intestinal spasms, to reduce salivation, and to treat motion sickness. Methscopolamine is also commonly used as a drying agent, to dry up post-nasal drip, in cold, irritable bowel syndrome and allergy medications

Methscopolamine, a methylated derivative of scopolamine, is a muscarinic antagonist structurally similar to the neurotransmitter acetylcholine. Its mechanism of action involves blocking the muscarinic acetylcholine receptors.

It was patented in 1902 and approved for medical use in 1947. Methscopolamine is an FDA-approved analog to hyoscine butylbromide.

Brand names

Brand names include Extendryl, AlleRx, Rescon, Pamine.

References

1. Drugs.com: Methscopolamine
2. Gennaro AR. The Science and Practice of Pharmacy. Remington. pp. 402–403, 1025. ISBN 0912734043.
3. Fischer J, Ganellin CR (2006). Analogue-based Drug Discovery. John Wiley & Sons. p. 446. ISBN 9783527607495.

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