TERAZOSIN HYDROCHLORIDE

Details

Stereochemistry	RACEMIC
Molecular Formula	C19H25N5O4.ClH.2H2O
Molecular Weight	459.924
Optical Activity	( + / - )
Defined Stereocenters	0 / 1
E/Z Centers	0
Charge	0

SHOW SMILES / InChI

Structure Search

SMILES

O.O.Cl.COC1=CC2=NC(=NC(N)=C2C=C1OC)N3CCN(CC3)C(=O)C4CCCO4

InChI

InChIKey=NZMOFYDMGFQZLS-UHFFFAOYSA-N

InChI=1S/C19H25N5O4.ClH.2H2O/c1-26-15-10-12-13(11-16(15)27-2)21-19(22-17(12)20)24-7-5-23(6-8-24)18(25)14-4-3-9-28-14;;;/h10-11,14H,3-9H2,1-2H3,(H2,20,21,22);1H;2*1H2

HIDE SMILES / InChI

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

Molecular Formula	C19H25N5O4
Molecular Weight	387.4329
Charge	0
Count

Stereochemistry	RACEMIC
Additional Stereochemistry	No
Defined Stereocenters	0 / 1
E/Z Centers	0
Optical Activity	( + / - )

Molecular Formula	H2O
Molecular Weight	18.0153
Charge	0
Count

Stereochemistry	ACHIRAL
Additional Stereochemistry	No
Defined Stereocenters	0 / 0
E/Z Centers	0
Optical Activity	NONE

Description
Sources: http://www.accessdata.fda.gov/drugsatfda_docs/nda/98/75140_Terazosin%20Hydrochloride_prntlbl.pdf
Curator's Comment: description was created based on several sources, including https://www.ncbi.nlm.nih.gov/pubmed/10503165

Terazosin (marketed as Hytrin or Zayasel) is a selective alpha1-antagonist used for treatment of symptoms of benign prostatic hyperplasia (BPH). It also acts to lower blood pressure, so it is a drug of choice for men with hypertension and prostate enlargement. All three receptor subtypes appear to be involved in maintaining vascular tone. The α1A-receptor maintains basal vascular tone while the α1B-receptor mediates the vasocontrictory effects of exogenous α1-agonists. Activation of α1-receptors activates Gq-proteins, which results in intracellular stimulation of phospholipases C, A2, and D. This results in mobilization of Ca2+ from intracellular stores, activation of mitogen-activated kinase and PI3 kinase pathways and subsequent vasoconstriction.

CNS Activity

Originator

Approval Year

Targets

Primary Target	Pharmacology	Condition	Potency
Adrenergic receptor alpha-1 169 Target ID: CHEMBL2094251 Sources: https://www.ncbi.nlm.nih.gov/pubmed/2462301	Antagonist 2778

Conditions

Condition	Modality	Targets	Highest Phase	Product
Hypertension 567 Sources: http://www.accessdata.fda.gov/drugsatfda_docs/nda/98/75140_Terazosin%20Hydrochloride_prntlbl.pdf	Curative		Approved 8429	TERAZOSIN HYDROCHLORIDE Approved Use are used to treat high blood preassure (hypertension); are also used to treat benign prostatic hyperplasia (BPH) in men Launch Date 2000
Benign prostatic hyperplasia 28 Sources: http://www.accessdata.fda.gov/drugsatfda_docs/nda/98/75140_Terazosin%20Hydrochloride_prntlbl.pdf	Primary		Approved 8429	TERAZOSIN HYDROCHLORIDE Approved Use are used to treat high blood preassure (hypertension); are also used to treat benign prostatic hyperplasia (BPH) in men Launch Date 2000

C_max

Value	Dose	Co-administered	Analyte	Population
48 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/1685091	2 mg single, oral dose: 2 mg route of administration: Oral experiment type: SINGLE co-administered:		TERAZOSIN plasma	Homo sapiens population: HEALTHY age: ADULT sex: UNKNOWN food status: FASTED
37 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/1685091	2 mg single, oral dose: 2 mg route of administration: Oral experiment type: SINGLE co-administered:		TERAZOSIN plasma	Homo sapiens population: HEALTHY age: ADULT sex: UNKNOWN food status: FED

AUC

Value	Dose	Co-administered	Analyte	Population
408 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/1685091	2 mg single, oral dose: 2 mg route of administration: Oral experiment type: SINGLE co-administered:		TERAZOSIN plasma	Homo sapiens population: HEALTHY age: ADULT sex: UNKNOWN food status: FASTED
418 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/1685091	2 mg single, oral dose: 2 mg route of administration: Oral experiment type: SINGLE co-administered:		TERAZOSIN plasma	Homo sapiens population: HEALTHY age: ADULT sex: UNKNOWN food status: FED

T_1/2

Value	Dose	Co-administered	Analyte	Population
8.4 h EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/1685091	2 mg single, oral dose: 2 mg route of administration: Oral experiment type: SINGLE co-administered:		TERAZOSIN plasma	Homo sapiens population: HEALTHY age: ADULT sex: UNKNOWN food status: FASTED
9.5 h EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/1685091	2 mg single, oral dose: 2 mg route of administration: Oral experiment type: SINGLE co-administered:		TERAZOSIN plasma	Homo sapiens population: HEALTHY age: ADULT sex: UNKNOWN food status: FED

F_unbound

Value	Dose	Co-administered	Analyte	Population
8% EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/2872802			TERAZOSIN plasma	Homo sapiens population: UNKNOWN age: UNKNOWN sex: UNKNOWN food status: UNKNOWN

Doses

Dose	Population	Adverse events
80 mg 1 times / day multiple, oral Highest studied dose Dose: 80 mg, 1 times / day Route: oral Route: multiple Dose: 80 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/11028256 Page: p.1169	unhealthy n = 14 Health Status: unhealthy Condition: Hypertension Population Size: 14 Sources: https://pubmed.ncbi.nlm.nih.gov/11028256 Page: p.1169	Disc. AE: Dizziness... AEs leading to discontinuation/dose reduction: Dizziness Sources: https://pubmed.ncbi.nlm.nih.gov/11028256 Page: p.1169
80 mg 1 times / day multiple, oral Highest studied dose Dose: 80 mg, 1 times / day Route: oral Route: multiple Dose: 80 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/1678920 Page: p.903	unhealthy n = 37 Health Status: unhealthy Condition: Hypertension Population Size: 37 Sources: https://pubmed.ncbi.nlm.nih.gov/1678920 Page: p.903	Disc. AE: Syncope... AEs leading to discontinuation/dose reduction: Syncope (2.7%) Sources: https://pubmed.ncbi.nlm.nih.gov/1678920 Page: p.903
20 mg 1 times / day multiple, oral MTD Dose: 20 mg, 1 times / day Route: oral Route: multiple Dose: 20 mg, 1 times / day Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2006/19057Orig1s021,%2020347Orig1s009%20lbl.pdf Page: p.9	unhealthy Health Status: unhealthy Condition: Benign Prostatic Hyperplasia\|Hypertension Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2006/19057Orig1s021,%2020347Orig1s009%20lbl.pdf Page: p.9	Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2006/19057Orig1s021,%2020347Orig1s009%20lbl.pdf Page: p.9
10 mg 1 times / day multiple, oral (max) Recommended Dose: 10 mg, 1 times / day Route: oral Route: multiple Dose: 10 mg, 1 times / day Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2006/19057Orig1s021,%2020347Orig1s009%20lbl.pdf Page: p.6	unhealthy Health Status: unhealthy Condition: Benign Prostatic Hyperplasia\|Hypertension Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2006/19057Orig1s021,%2020347Orig1s009%20lbl.pdf Page: p.6	Other AEs: Syncope, Postural hypotension... Other AEs: Syncope Postural hypotension Priapism Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2006/19057Orig1s021,%2020347Orig1s009%20lbl.pdf Page: p.6
20 mg 1 times / day multiple, oral (max) Studied dose Dose: 20 mg, 1 times / day Route: oral Route: multiple Dose: 20 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/7533452 Page: p.409	unhealthy n = 494 Health Status: unhealthy Condition: Benign Prostatic Hyperplasia Sex: M Population Size: 494 Sources: https://pubmed.ncbi.nlm.nih.gov/7533452 Page: p.409	Disc. AE: Dizziness, Asthenia... AEs leading to discontinuation/dose reduction: Dizziness (6.7%) Asthenia (3.8%) Somnolence (2%) Chest pain (1.6%) Headache (1.2%) Dyspnea (1.2%) Prostate carcinoma (1%) Sources: https://pubmed.ncbi.nlm.nih.gov/7533452 Page: p.409
20 mg 1 times / day multiple, oral (max) Studied dose Dose: 20 mg, 1 times / day Route: oral Route: multiple Dose: 20 mg, 1 times / day Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2006/19057Orig1s021,%2020347Orig1s009%20lbl.pdf Page: p.12	unhealthy n = 636 Health Status: unhealthy Condition: Benign Prostatic Hyperplasia Sex: M Population Size: 636 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2006/19057Orig1s021,%2020347Orig1s009%20lbl.pdf Page: p.12	Disc. AE: Fever, Headache... AEs leading to discontinuation/dose reduction: Fever (0.5%) Headache (1.1%) Postural hypotension (0.5%) Syncope (0.5%) Nausea (0.5%) Dizziness (2%) Vertigo (0.5%) Dyspnea (0.5%) Blurred vision (0.6%) Amblyopia (0.6%) Urinary tract infection (0.5%) Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2006/19057Orig1s021,%2020347Orig1s009%20lbl.pdf Page: p.12
40 mg 1 times / day multiple, oral (max) Studied dose Dose: 40 mg, 1 times / day Route: oral Route: multiple Dose: 40 mg, 1 times / day Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2006/19057Orig1s021,%2020347Orig1s009%20lbl.pdf Page: p.16	unhealthy n = 859 Health Status: unhealthy Condition: Hypertension Population Size: 859 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2006/19057Orig1s021,%2020347Orig1s009%20lbl.pdf Page: p.16	Disc. AE: Asthenia, Headache... AEs leading to discontinuation/dose reduction: Asthenia (1.6%) Headache (1.3%) Palpitations (1.4%) Postural hypotension (0.5%) Syncope (0.5%) Tachycardia (0.6%) Nausea (0.8%) Peripheral edema (0.6%) Dizziness (3.1%) Paresthesia (0.8%) Somnolence (0.6%) Dyspnea (0.9%) Nasal congestion (0.6%) Blurred vision (0.6%) Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2006/19057Orig1s021,%2020347Orig1s009%20lbl.pdf Page: p.16

AEs

Overview

CYP3A4	CYP2C9	CYP2D6	hERG
			inhibitor 1612

OverviewOther

Other Inhibitor	Other Substrate	Other Inducer
MRP2 383	CYP 270

Drug as perpetrator

Target	Modality	Activity	Metabolite	Clinical evidence
MRP2 475	inhibitor 3277 Sources: https://pubmed.ncbi.nlm.nih.gov/22077101/	no

Drug as victim

Target	Modality	Activity	Metabolite	Clinical evidence
CYP 270	substrate 3367 Sources: https://www.sciencedirect.com/science/article/pii/S0099542808605444	yes

Tox targets

Target	Modality	Activity	Metabolite	Clinical evidence
hERG 1647	inhibitor 1626 Sources: https://pubmed.ncbi.nlm.nih.gov/15098086/

Sourcing

Vendor/Aggregator	ID	URL
ChEBI	CHEBI:9445	https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:9445
ChemicalBook	CB22630517	https://www.chemicalbook.com/ChemicalProductProperty_EN_CB22630517
ChemicalBook	CB2285511	https://www.chemicalbook.com/ChemicalProductProperty_EN_CB2285511
ChemicalBook	CB73360180	https://www.chemicalbook.com/ChemicalProductProperty_EN_CB73360180
ChemicalBook	CB9285510	https://www.chemicalbook.com/ChemicalProductProperty_EN_CB9285510
MolPort	MolPort-001-684-489	https://www.molport.com/shop/molecule-link/MolPort-001-684-489
eMolecules	902550	https://www.emolecules.com/cgi-bin/more?vid=902550

PubMed

Title	Date	PubMed
High-performance liquid chromatographic analysis and pharmacokinetics of terazosin in healthy volunteers.	2001	12889528
Use of terazosine in patients with chronic pelvic pain syndrome and evaluation by prostatitis symptom score index.	2001	11583367
Efficacy and tolerability of drugs for treatment of benign prostatic hyperplasia.	2001	11583366
Effect of terazosin on the lipid profile in patients with symptomatic benign prostatic hyperplasia.	2001	11490211
Overstimulation of the alpha1B-adrenergic receptor causes a "seizure plus" syndrome.	2001 Feb	11175818
Combined effect of terazosin and finasteride on apoptosis, cell proliferation, and transforming growth factor-beta expression in benign prostatic hyperplasia.	2001 Jan 1	11170131
Loss of nocturnal dipping of blood pressure and heart rate in obesity-induced hypertension in rabbits.	2001 Jul 20	11485285
Initiation of nonselective alpha1-antagonist therapy and occurrence of hypotension-related adverse events among men with benign prostatic hyperplasia: a retrospective cohort study.	2001 May	11394731
Evaluating adverse cardiovascular effects of drug treatment for benign prostatic hyperplasia (BPH): methodological considerations.	2001 May	11337216
Apoptotic and proliferative index after Alpha-1-adrenoceptor antagonist and/or finasteride treatment in benign prostatic hyperplasia.	2002	12444285
Long-term risk of re-treatment of patients using alpha-blockers for lower urinary tract symptoms.	2002 Apr	11912399
Hypertension in L-NAME-treated diabetic rats depends on an intact sympathetic nervous system.	2002 Apr	11893611
Chronic cardiovascular and renal actions of leptin: role of adrenergic activity.	2002 Feb	11882597
alpha-Adrenoceptor antagonists in the treatment of benign prostate hyperplasia.	2002 Jul	12037374
Characterization of some novel alpha 1-adrenoceptor antagonists in human hyperplastic prostate.	2002 Jun 7	12065203
Influence of new evidence on prescription patterns.	2002 Nov-Dec	12463291
Prophylactic versus therapeutic alpha-blockers after permanent prostate brachytherapy.	2002 Oct	12385927
[Effects of terazosine and atenolol on serum lipids in essential hypertension].	2002 Sep	12448067
[alpha 1-receptor blockade in therapy of benign prostatic hyperplasia syndrome. Correct dosing for optimal effectiveness].	2002 Sep	12426862
[Comparison of prazosin, terazosin and tramsulosin: functional and binding studies in isolated prostatic and vascular human tissues].	2002 Sep	12384622
[Use of alpha1-adrenergic blockaders in voiding disorders in women].	2002 Sep-Oct	12518672
[Results of monotherapy with terazosin (kornam) in chronic infectious prostatitis patients].	2002 Sep-Oct	12518671
Use of alpha-blockers and the risk of hip/femur fractures.	2003 Dec	14641795
Terazosin therapy for chronic prostatitis/chronic pelvic pain syndrome: a randomized, placebo controlled trial.	2003 Feb	12544314
[Hepatotoxicity induced by terazosin].	2003 Feb 1	12605736
Alpha 1-adrenoceptor effects mediated by protein kinase C alpha in human cultured prostatic stromal cells.	2003 Jan	12522093
Comparison of finasteride and alpha-blockers as independent risk factors for erectile dysfunction.	2003 Jul-Aug	12918887
Is terazosin helpful in chronic prostatitis?	2003 Jun	12791224
Quinazoline-based alpha 1-adrenoceptor antagonists induce prostate cancer cell apoptosis via TGF-beta signalling and I kappa B alpha induction.	2003 May 19	12771931
Growth inhibiting effects of terazosin on androgen-independent prostate cancer cell lines.	2003 Nov	14642133
Hormonal and morphologic evaluation of the effects of antiandrogens on the blood supply of the rat prostate.	2003 Nov	14624931
Pharmacological characterization of isolated human prostate.	2003 Sep	12913765
[Pharmacologic treatment of benign prostatic hyperplasia].	2003 Sep 14	14596018

Patents

Sample Use Guides

In Vivo Use Guide

for Hypertension: Initial dose: 1 mg orally once a day at bedtime; Maintenance dose: 1-5 mg orally once a day. Maximum dose: 20 mg per day. Usual Adult Dose for Benign Prostatic Hyperplasia: Initial dose: 1 mg orally once a day at bedtime. Maintenance dose: Increased in a stepwise fashion to 2 mg, 5 mg, or 10 mg once a day to achieve desired improvement of symptoms.

Route of Administration: Oral

In Vitro Use Guide

Unknown

Substance Class	Chemical Created by `admin` on `Fri Dec 15 15:02:49 GMT 2023` Edited by `admin` on `Fri Dec 15 15:02:49 GMT 2023`
Record UNII	D32S14F082
Record Status	`Validated (UNII)`
Record Version

Download

Name

Type

Language

TERAZOSIN HYDROCHLORIDE

Official Name

English

TERAZOSIN HYDROCHLORIDE DIHYDRATE [EP MONOGRAPH]

Common Name

English

TERAZOSIN HCL 2H20

Common Name

English

URODIE

Brand Name

English

ITRIN

Brand Name

English

TERAZOSIN HYDROCHLORIDE HYDRATE

Common Name

English

TERAZOSIN HYDROCHLORIDE [USP-RS]

Common Name

English

HYTRACIN

Brand Name

English

TERAZOSIN HYDROCHLORIDE HYDRATE [JAN]

Common Name

English

1-(4-Amino-6,7-dimethoxy-2-quinazolinyl)-4-(tetrahydro-2-furoyl)piperazine monohydrochloride dihydrate

Systematic Name

English

Terazosin hydrochloride [WHO-DD]

Common Name

English

HEITRIN

Brand Name

English

PIPERAZINE, 1-(4-AMINO-6,7-DIMETHOXY-2-QUINAZOLINYL)-4-((TETRAHYDRO-2-FURANYL)CARBONYL)-, MONOHYDROCHLORIDE, DIHYDRATE

Common Name

English

TERAZOSIN (AS HYDROCHLORIDE)

Common Name

English

TERAZOSIN MONOHYDROCHLORIDE DIHYDRATE

Common Name

English

TERAZOSIN HYDROCHLORIDE [USAN]

Common Name

English

TERAZOSIN HYDROCHLORIDE DIHYDRATE

Common Name

English

TERAZOSIN HYDROCHLORIDE [VANDF]

Common Name

English

METHANONE, (4-(4-AMINO-6,7-DIMETHOXY-2-QUINAZOLINYL)-1-PIPERAZINYL)(TETRAHYDRO-2-FURANYL)-, HYDROCHLORIDE, HYDRATE (1:1:2)

Systematic Name

English

HYTRIN

Brand Name

English

ABBOTT-45975

Code

English

TERAZOSIN HYDROCHLORIDE DIHYDRATE [MI]

Common Name

English

TERAZOSIN HYDROCHLORIDE [USP MONOGRAPH]

Common Name

English

TERAZOSIN HYDROCHLORIDE DIHYDRATE [EP IMPURITY]

Common Name

English

TERAZOSIN HYDROCHLORIDE [ORANGE BOOK]

Common Name

English

NSC-759168

Code

English

Classification Tree Code System Code

NCI_THESAURUS

C29713