OXYPHENONIUM BROMIDE

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Search structure


Trade Names	ANTRENYL
Synonyms	Antrenil Antrenyl BA-5473 C-5473 NSC-759248 Oxifenon Oxyfenon Oxyphenon Oxyphenonium bromide Spasmodin Spasmophen
Status
Molecule Category	Salt-form
UNII	S9421HWB3Z
EPA CompTox	DTXSID4045632

Structure


InChI Key	UKLQXHUGTKWPSR-UHFFFAOYSA-M
Smiles	CC[N+](C)(CC)CCOC(=O)C(O)(c1ccccc1)C1CCCCC1.[Br-]
InChI	InChI=1S/C21H34NO3.BrH/c1-4-22(3,5-2)16-17-25-20(23)21(24,18-12-8-6-9-13-18)19-14-10-7-11-15-19;/h6,8-9,12-13,19,24H,4-5,7,10-11,14-17H2,1-3H3;1H/q+1;/p-1

Physicochemical Descriptors

Property Name	Value
Molecular Formula	C21H34BrNO3
Molecular Weight	428.41
AlogP	3.48
Hydrogen Bond Acceptor	3.0
Hydrogen Bond Donor	1.0
Number of Rotational Bond	8.0
Polar Surface Area	46.53
Molecular species	NEUTRAL
Aromatic Rings	1.0
Heavy Atoms	25.0

Pharmacology

Mechanism of Action	Action	Reference
Muscarinic acetylcholine receptor M1 antagonist	ANTAGONIST	ISBN PubMed
Muscarinic acetylcholine receptor M3 antagonist	ANTAGONIST	ISBN PubMed

Target Conservation


Protein: Muscarinic acetylcholine receptor M1 Description: Muscarinic acetylcholine receptor M1 Organism : Homo sapiens P11229 ENSG00000168539










Protein: Muscarinic acetylcholine receptor M3 Description: Muscarinic acetylcholine receptor M3 Organism : Homo sapiens P20309 ENSG00000133019

Cross References

Resources	Reference
CAS NUMBER	50-10-2
ChEMBL	CHEMBL1200906
FDA SRS	S9421HWB3Z
PubChem	5748
SureChEMBL	SCHEMBL248890

CONTENTS

EcoDrug+ was developed under the PREMIER Innovative Medicines Initiative 2 Joint Undertaking (JU) under grant agreement No 875508. The JU receives support from the EU’s Horizon 2020 research and innovation programme and the European Federation of Pharmaceutical Industries and Associations (EFPIA). The views reflect only the authors’ perspective and the JU is not responsible for any use that may be made of the information EcoDrug+ contains.

Elements of EcoDrug+ were developed under the Biocenter Finland Drug Discovery and Chemical Biology network. CSC-IT Center for Science Ltd is thanked for providing computational resources. Credit is given to Ensembl for collecting species images (provided under public domain licences such as Wikimedia and NHGRI).

Content of EcoDrug+ is provided without guarantee for correctness.

Cite Us:

Ashenafi Legehar, Siobhán Monaghan, Mael Briand, Akseli Niemelä, Leo Ghemtio, Ziaurrehman Tanoli, A Ross Brown, Charles R Tyler, Henri Xhaard, EcoDrug PLUS: an advanced database for drug target conservation analysis and environmental risk assessment, Nucleic Acids Research, Volume 54, Issue D1, 6 January 2026, Pages D1397–D1404, https://doi.org/10.1093/nar/gkaf1251

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Last update: Monday, 27^th July 2026