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Details

Stereochemistry ABSOLUTE
Molecular Formula C31H41N6O7.Na
Molecular Weight 632.683
Optical Activity UNSPECIFIED
Defined Stereocenters 5 / 5
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of BQ-123 SODIUM

SMILES

[Na+].CC(C)C[C@@H]1NC(=O)[C@H](NC(=O)[C@@H]2CCCN2C(=O)[C@@H](CC([O-])=O)NC(=O)[C@@H](CC3=CNC4=C3C=CC=C4)NC1=O)C(C)C

InChI

InChIKey=FLIKEIGEOXCRRG-JKNHBXRPSA-M
InChI=1S/C31H42N6O7.Na/c1-16(2)12-21-27(40)33-22(13-18-15-32-20-9-6-5-8-19(18)20)28(41)35-23(14-25(38)39)31(44)37-11-7-10-24(37)29(42)36-26(17(3)4)30(43)34-21;/h5-6,8-9,15-17,21-24,26,32H,7,10-14H2,1-4H3,(H,33,40)(H,34,43)(H,35,41)(H,36,42)(H,38,39);/q;+1/p-1/t21-,22+,23+,24-,26+;/m0./s1

HIDE SMILES / InChI

Molecular Formula C31H41N6O7
Molecular Weight 609.6932
Charge -1
Count
Stereochemistry ABSOLUTE
Additional Stereochemistry No
Defined Stereocenters 5 / 5
E/Z Centers 0
Optical Activity UNSPECIFIED

Molecular Formula Na
Molecular Weight 22.98976928
Charge 1
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

BQ-123 is a selective endothelin receptor-1 antagonist; it is used as a biochemical tool in the study of endothelin receptor function. BQ-123 was suspected to contribute to the regulation of vascular tone humans. However, a study involving young normotensive subjects did not demonstrate any major role for BQ-123 regulation of vascular tone.

CNS Activity

Curator's Comment: Known to be CNS non-penetrant in rats. Human data not available

Originator

Curator's Comment: BQ-123 originally isolated from microbial sources by Banyu investigators

Approval Year

Targets

Targets

Primary TargetPharmacologyConditionPotency
Target ID: P25101|||Q16433
Gene ID: 1909.0
Gene Symbol: EDNRA
Target Organism: Homo sapiens (Human)
Conditions

Conditions

ConditionModalityTargetsHighest PhaseProduct
PubMed

PubMed

TitleDatePubMed
BQ-123 prevents LPS-induced preterm birth in mice via the induction of uterine and placental IL-10.
2015-02-01
Selective ET(A) receptor blockade protects against cisplatin-induced acute renal failure in male rats.
2014-05-05
Endothelin-1 promotes osteosarcoma cell invasion and survival against cisplatin-induced apoptosis.
2011-11
Irregular electrical activation of intrinsic cardiac adrenergic cells increases catecholamine-synthesizing enzymes.
2011-09-30
Simvastatin stimulates production of the antiapoptotic protein Bcl-2 via endothelin-1 and NFATc3 in SH-SY5Y cells.
2010-06
Role of ET(A) and ET(B) endothelin receptors on endothelin-1-induced potentiation of nociceptive and thermal hyperalgesic responses evoked by capsaicin in rats.
2009-07-03
Vehicular emissions induce vascular MMP-9 expression and activity associated with endothelin-1-mediated pathways.
2009-04
Molecular analysis of cocaine-induced endothelial dysfunction: role of endothelin-1 and nitric oxide.
2008-12
Aldosterone induces interleukin-18 through endothelin-1, angiotensin II, Rho/Rho-kinase, and PPARs in cardiomyocytes.
2008-09
Central endothelin: effects on vasopressin and the arterial baroreflex in doxorubicin heart failure rats.
2008-06
NADPH oxidase mediates angiotensin II-induced endothelin-1 expression in vascular adventitial fibroblasts.
2007-09-01
Mechanisms of direct peritoneal resuscitation-mediated splanchnic hyperperfusion following hemorrhagic shock.
2007-04
Regulation of dHAND protein expression by all-trans retinoic acid through ET-1/ETAR signaling in H9c2 cells.
2006-10-01
Ethanol consumption enhances endothelin-1-induced contraction in the isolated rat carotid.
2006-08
ETa-receptor blockade, but not ACE inhibition, blunts retinal vessel response during isometric exercise.
2006-04
Contribution of endothelin receptors and cyclooxygenase-derivatives to the altered response of the rabbit renal artery to endothelin-1 in diabetes.
2006-03-18
Involvement of endothelium and endothelin-1 in lead-induced smooth muscle cell dysfunction in rats.
2006-02
Leptin regulates cardiomyocyte contractile function through endothelin-1 receptor-NADPH oxidase pathway.
2006-02
Endothelin-1 receptor antagonist BQ123 prevents pulmonary artery hypertension induced by low ambient temperature in broilers.
2005-12
Functional characterization and expression of endothelin receptors in rat carotid artery: involvement of nitric oxide, a vasodilator prostanoid and the opening of K+ channels in ETB-induced relaxation.
2005-11
Modulation of the myocardial effects of selective ETB receptor stimulation and its implications for heart failure.
2005-09
Endothelin isoforms and the response to myocardial stretch.
2005-06
Cyclo-oxygenase-2, endothelium and aortic reactivity during deoxycorticosterone acetate salt-induced hypertension.
2005-05
Endothelin receptors in lower esophageal sphincter circular smooth muscle.
2005-04-15
Endothelin 1 versus endothelin 3 in the development of the slow force response to myocardial stretch.
2005-04
Chronic endothelin exposure inhibits connexin43 expression in cultured cortical astroglia.
2005-02-01
Intercellular communication via gap junctions in activated rat hepatic stellate cells.
2005-02
Endothelins induce ETB receptor-mediated mechanical hypernociception in rat hindpaw: roles of cAMP and protein kinase C.
2004-10-06
Endothelin upregulates the expression of vasopressin V2 mRNA in the inner medullary collecting duct of the rat.
2004-09
Endothelin-1-induced responses in isolated mouse vessels: the expression and function of receptor types.
2004-08
Obligatory role for endogenous endothelin in mediating the hypertrophic effects of phenylephrine and angiotensin II in neonatal rat ventricular myocytes: evidence for two distinct mechanisms for endothelin regulation.
2004-07
Ventricular nonmyocytes inhibit doxorubicin-induced myocyte apoptosis: involvement of endogenous endothelin-1 as a paracrine factor.
2004-05
Actions of endothelin and corticotropin releasing factor in the guinea-pig ileum: no evidence for an interaction with capsaicin-sensitive neurons.
2003-08
Endothelin receptor blockade inhibits molecular effectors of Kaposi's sarcoma cell invasion and tumor growth in vivo.
2003-08
Endothelin-1 inhibits TNF alpha-induced iNOS expression in 3T3-F442A adipocytes.
2003-07
Endothelin ET(A) but not ET(B) receptors mediate contraction of common bile duct.
2003-05-15
Developmental changes in the functional, biochemical and molecular properties of rat bladder endothelin receptors.
2003-05
Et-A receptor antagonist BQ123 prevents radiocontrast media-induced renal medullary hypoxia.
2003-01
Endothelin-1 binding to endothelin receptors in the rat anterior pituitary gland: possible formation of an ETA-ETB receptor heterodimer.
2002-04
Stimulation of catecholamine biosynthesis via the protein kinase C pathway by endothelin-1 in PC12 rat pheochromocytoma cells.
2002-03-01
Role of endothelin-1 in the active constriction of human atherosclerotic coronary arteries.
2001-09-04
Angiotensin II receptor blockade unmasks a depressor response to endothelin antagonists in rats.
2000-05-05
Endothelin receptor-mediated Ca2+ mobilization and contraction in bovine oviductal arteries: comparison with noradrenaline and potassium.
1997-10
Endothelin ETA receptors subtype mediates phosphoinositide hydrolysis in adrenal medulla.
1997-09
[Demonstration of a vasopressor role of endogenous endothelin after inhibition of nitric oxide synthesis in rats].
1995-08
ETA receptor-mediated constrictor responses to endothelin peptides in human blood vessels in vitro.
1995-05
Patents

Sample Use Guides

double-blind randomized study: 50 nmol/min for 60 min, or 300 nmol/min for 5 min followed by saline for 55 min
Route of Administration: Intra-arterial
In Vitro Use Guide
Unknown
Substance Class Chemical
Created
by admin
on Mon Mar 31 23:34:24 GMT 2025
Edited
by admin
on Mon Mar 31 23:34:24 GMT 2025
Record UNII
05427HSQ1I
Record Status Validated (UNII)
Record Version
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Name Type Language
BQ-123 SODIUM
Common Name English
CYCLO(D-.ALPHA.-ASPARTYL-L-PROLYL-D-VALYL-L-LEUCYL-D-TRYPTOPHYL), MONOSODIUM SALT
Preferred Name English
Code System Code Type Description
DRUG BANK
DBSALT002128
Created by admin on Mon Mar 31 23:34:24 GMT 2025 , Edited by admin on Mon Mar 31 23:34:24 GMT 2025
PRIMARY
PUBCHEM
53229988
Created by admin on Mon Mar 31 23:34:24 GMT 2025 , Edited by admin on Mon Mar 31 23:34:24 GMT 2025
PRIMARY
CAS
136655-57-7
Created by admin on Mon Mar 31 23:34:24 GMT 2025 , Edited by admin on Mon Mar 31 23:34:24 GMT 2025
PRIMARY
FDA UNII
05427HSQ1I
Created by admin on Mon Mar 31 23:34:24 GMT 2025 , Edited by admin on Mon Mar 31 23:34:24 GMT 2025
PRIMARY
Related Record Type Details
PARENT -> SALT/SOLVATE
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ACTIVE MOIETY