PHENTOLAMINE MESYLATE

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Search structure


Synonyms	Mesylate phentolamine NV-101 Oraverse Phentolamine mesilate Phentolamine mesylate Phentolamine methanesulfonate Regitine Rogitine
Status
Molecule Category	Salt-form
UNII	Y7543E5K9T
EPA CompTox	DTXSID60215315

Structure


InChI Key	OGIYDFVHFQEFKQ-UHFFFAOYSA-N
Smiles	CS(=O)(=O)O.Cc1ccc(N(CC2=NCCN2)c2cccc(O)c2)cc1
InChI	InChI=1S/C17H19N3O.CH4O3S/c1-13-5-7-14(8-6-13)20(12-17-18-9-10-19-17)15-3-2-4-16(21)11-15;1-5(2,3)4/h2-8,11,21H,9-10,12H2,1H3,(H,18,19);1H3,(H,2,3,4)

Physicochemical Descriptors

Property Name	Value
Molecular Formula	C18H23N3O4S
Molecular Weight	377.47
AlogP	2.84
Hydrogen Bond Acceptor	4.0
Hydrogen Bond Donor	2.0
Number of Rotational Bond	4.0
Polar Surface Area	47.86
Molecular species	BASE
Aromatic Rings	2.0
Heavy Atoms	21.0

Pharmacology

Mechanism of Action	Action	Reference
Adrenergic receptor alpha antagonist	ANTAGONIST	DailyMed

	EC50(nM)	IC50(nM)	Kd(nM)	Ki(nM)	Inhibition(%)
Rattus norvegicus	100	-	-	-	-

Target Conservation


Protein: Adrenergic receptor alpha Description: Alpha-2A adrenergic receptor Organism : Homo sapiens P08913 ENSG00000150594










Protein: Adrenergic receptor alpha Description: Alpha-2B adrenergic receptor Organism : Homo sapiens P18089 ENSG00000274286











Protein: Adrenergic receptor alpha Description: Alpha-2C adrenergic receptor Organism : Homo sapiens P18825 ENSG00000184160









Protein: Adrenergic receptor alpha Description: Alpha-1D adrenergic receptor Organism : Homo sapiens P25100 ENSG00000171873











Protein: Adrenergic receptor alpha Description: Alpha-1A adrenergic receptor Organism : Homo sapiens P35348 ENSG00000120907











Protein: Adrenergic receptor alpha Description: Alpha-1B adrenergic receptor Organism : Homo sapiens P35368 ENSG00000170214

Cross References

Resources	Reference
CAS NUMBER	65-28-1
ChEMBL	CHEMBL1200873
FDA SRS	Y7543E5K9T
SureChEMBL	SCHEMBL40852

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, 23^rd March 2026