U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

Details

Stereochemistry RACEMIC
Molecular Formula C10H13NO2.ClH
Molecular Weight 215.677
Optical Activity ( + / - )
Defined Stereocenters 0 / 1
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of 4-AMINO-3-PHENYLBUTYRIC ACID HYDROCHLORIDE

SMILES

Cl.NCC(CC(O)=O)C1=CC=CC=C1

InChI

InChIKey=XSYRYMGYPBGOPS-UHFFFAOYSA-N
InChI=1S/C10H13NO2.ClH/c11-7-9(6-10(12)13)8-4-2-1-3-5-8;/h1-5,9H,6-7,11H2,(H,12,13);1H

HIDE SMILES / InChI

Molecular Formula C10H13NO2
Molecular Weight 179.2157
Charge 0
Count
Stereochemistry RACEMIC
Additional Stereochemistry No
Defined Stereocenters 0 / 1
E/Z Centers 0
Optical Activity ( + / - )

Molecular Formula ClH
Molecular Weight 36.461
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Phenibut (beta-phenyl-gamma-aminobutyric acid or 4-amino-3-phenylbutyric acid) is a neuropsychotropic drug that was discovered and introduced into clinical practice in Russia in the 1960s. It has anxiolytic and nootropic (cognition enhancing) effects. It acts as a GABA-mimetic, primarily at GABA(B) receptors. Pharmacological activity of racemic phenibut relies on R-phenibut and this correlates to the binding affinity of enantiomers of phenibut to the GABAB receptor. In addition R-phenibut binds to the α2-δ subunit of voltage-dependent calcium channels. It is highly effective in treating anxiety, post-traumatic stress disorder, depression, asthenia, insomnia, alcoholism, stuttering, and vestibular disorders. It also improves mental performance (attention, memory, speed and accuracy of sensory-motor reactions), physical performance, reduces sleep disorders as well as movement and speech disorders.

Originator

Sources: Khaunma RA. Tranquillizing effects of beta-phenyl-gamma-aminobutyric acid (“Phenigama”). Byull Eksp Biol Med 1964;1:54–58
Curator's Comment: Phenibut (beta-phenyl-gamma-aminobutyric acid, beta-phenyl-GABA) was synthesized by Perekalin and his associates at the Department of Organic Chemistry of the Herzen Pe-dagogic Institute in St. Petersburg, Russia. https://www.ncbi.nlm.nih.gov/pubmed/11830761

Approval Year

TargetsConditions

Conditions

ConditionModalityTargetsHighest PhaseProduct
Primary
PHENIBUT

Approved Use

Asthenic and Anxious-Neurotic States, Worry, Anxiety, Fear Sleep Disorders Tiredness Improve Memory, Cognition, Mood
Primary
PHENIBUT

Approved Use

Asthenic and Anxious-Neurotic States, Worry, Anxiety, Fear Sleep Disorders Tiredness Improve Memory, Cognition, Mood
Primary
PHENIBUT

Approved Use

Asthenic and Anxious-Neurotic States, Worry, Anxiety, Fear Sleep Disorders Tiredness Improve Memory, Cognition, Mood
PubMed

PubMed

TitleDatePubMed
[Antiabstinent action of fenibut and baclofen on a model of abstinence induced by the benzodiazepine receptor antagonist CGS 8216 in rats receiving diazepam].
1987 Jun
[Experimental study of the antiepileptic activity of fenibut and its combinations with sodium valproate and aminooxyacetic acid].
1988 May-Jun
[Neurochemical characteristics of the ventromedial hypothalamus and anti-aversive effects of anxiolytic agents in various anxiety models].
2001 Sep
Phenibut (beta-phenyl-GABA): a tranquilizer and nootropic drug.
2001 Winter
[Anti-arrhythmic properties of GABA and GABA-ergic system activators].
2002 Jan-Feb
[Cardiac effects of fenibut in development of experimental chronic renal insufficiency].
2003 Jul-Aug
Neurochemical characteristics of the ventromedial hypothalamus in mediating the antiaversive effects of anxiolytics in different models of anxiety.
2003 Mar
[Peculiarities of nootropic effect of phenibut].
2006
[Effect of phenibut on the respiratory arrest caused by serotonin].
2006 Jan-Feb
[Neurochemical features of the ventral pallidum in realization of the antiaversive effects of anxiolytics in different models of anxiety].
2006 Jan-Feb
Neurochemical mechanisms of the dorsal pallidum in the antiaversive effects of anxiolytics in various models of anxiety.
2006 Sep
Quantitative analysis of phenibut in rat brain tissue extracts by liquid chromatography-tandem mass spectrometry.
2008 Dec
[Effects of aminalon, fenibut, and picamilon on the typological parameters of cerebral hemodynamics in swimmers with dysadaptation syndrome].
2009 Jul-Aug
Comparative study of immunocorrective activity of phenibut and its organic salts in experimental immunodeficiency.
2009 May
[Effects of phenibut on parameters of cerebral hemodynamics in swimmers with dysadaptation syndrome and various types of systemic hemodynamics].
2010 Aug
[Interhemisphere asymmetry of hippocampus and neocortex in correlates of active and passive behavioural strategy in negative emotional situations].
2010 Dec
[Comparative study of immunomodulating properties of phenibut and gammoxin].
2010 Dec
[Changes in the psycho-emotional state under conditions of suppressed immunogenesis, the correction of the disorders with GABA-positive means].
2010 Feb
Paired-pulse inhibition in the auditory cortex in Parkinson's disease and its dependence on clinical characteristics of the patients.
2010 Nov 1
Patents

Patents

Sample Use Guides

Initial dose is 250-500 mg (1-2 pills) 3 times a day. Maximum single dose: 750 mg, for patients over 60 years: 500 mg. The course of treatment is 2-3 weeks. If necessary, the course of treatment can be prolonged to 4-6 weeks. Patients, who have somnolence or other central nervous system disturbances during administration of Phenibut, should be careful about driving.
Route of Administration: Oral
In Vitro Use Guide
It has been established in experiments on the isolated spinal cord of 7-14-day-old rats that the GABAB-mimetic phenibut (10-100 uM) elicits a slow-developing depolarization of motoneurons, suppression of spontaneous activity and polysynaptic reflex discharges of motoneurons, recorded from the ventral roots.
Substance Class Chemical
Created
by admin
on Sat Dec 16 07:51:13 GMT 2023
Edited
by admin
on Sat Dec 16 07:51:13 GMT 2023
Record UNII
625240H2LN
Record Status Validated (UNII)
Record Version
  • Download
Name Type Language
4-AMINO-3-PHENYLBUTYRIC ACID HYDROCHLORIDE
MI  
Systematic Name English
HYDROCINNAMIC ACID, .BETA.-(AMINOMETHYL)-, HYDROCHLORIDE
Common Name English
.BETA.-PHENYL-GABA HYDROCHLORIDE
Common Name English
.GAMMA.-AMINO-.BETA.-PHENYLBUTYRIC ACID HYDROCHLORIDE
Systematic Name English
4-Amino-3-phenylbutyric acid hydrochloride [WHO-DD]
Common Name English
4-AMINO-3-PHENYLBUTANOIC ACID HYDROCHLORIDE, (±)-
Common Name English
4-AMINO-3-PHENYLBUTYRIC ACID HYDROCHLORIDE [MI]
Common Name English
BENZENEPROPANOIC ACID, .BETA.-(AMINOMETHYL)-, HYDROCHLORIDE
Common Name English
Code System Code Type Description
PUBCHEM
18288
Created by admin on Sat Dec 16 07:51:14 GMT 2023 , Edited by admin on Sat Dec 16 07:51:14 GMT 2023
PRIMARY
MERCK INDEX
m1730
Created by admin on Sat Dec 16 07:51:14 GMT 2023 , Edited by admin on Sat Dec 16 07:51:14 GMT 2023
PRIMARY Merck Index
SMS_ID
300000017632
Created by admin on Sat Dec 16 07:51:14 GMT 2023 , Edited by admin on Sat Dec 16 07:51:14 GMT 2023
PRIMARY
FDA UNII
625240H2LN
Created by admin on Sat Dec 16 07:51:14 GMT 2023 , Edited by admin on Sat Dec 16 07:51:14 GMT 2023
PRIMARY
CAS
3060-41-1
Created by admin on Sat Dec 16 07:51:14 GMT 2023 , Edited by admin on Sat Dec 16 07:51:14 GMT 2023
PRIMARY
Related Record Type Details
PARENT -> SALT/SOLVATE