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Pirbuterol

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From Wikipedia, the free encyclopedia

Chemical compound

For other uses, seeMaxair (disambiguation).

Pharmaceutical compound

Pirbuterol
Clinical data

Trade names	Maxair
AHFS/Drugs.com	Consumer Drug Information
MedlinePlus	a601096
Pregnancy category	C
Routes of administration	Inhalational (MDI)
ATC code	R03AC08 (WHO) R03CC07 (WHO)
Legal status
Legal status	AU: S4 (Prescription only) US: ℞-only
Identifiers
IUPAC name (RS)-6-[2-(tert-butylamino)-1-hydroxyethyl]-2-(hydroxymethyl)pyridin-3-ol
CAS Number	38677-81-5^Y HCl: 38029-10-6^Y
PubChemCID	4845
IUPHAR/BPS	7272
DrugBank	DB01291^Y
ChemSpider	4679^Y
UNII	OG645J8RVW HCl: J6793T658K^Y
KEGG	D08387^N
ChEMBL	ChEMBL1094966^Y
CompTox Dashboard(EPA)	DTXSID0046937
Chemical and physical data
Formula	C₁₂H₂₀N₂O₃
Molar mass	240.303 g·mol⁻¹
3D model (JSmol)	Interactive image
Chirality	Racemic mixture
SMILES Oc1ccc(nc1CO)C(O)CNC(C)(C)C
InChI InChI=1S/C12H20N2O3/c1-12(2,3)13-6-11(17)8-4-5-10(16)9(7-15)14-8/h4-5,11,13,15-17H,6-7H2,1-3H3^Y Key:VQDBNKDJNJQRDG-UHFFFAOYSA-N^Y
^NY (what is this?) (verify)

Pirbuterol (trade nameMaxair) is a short-actingβ₂ adrenoreceptor agonist withbronchodilating action used in the treatment ofasthma, available (as pirbuterol acetate) as a breath-activatedmetered-dose inhaler.

It was patented in 1971 and came into medical use in 1983.^[1]

Medical use

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Pirbuterol is used in asthma for reversal of acutebronchospasm, and also as a maintenance medication to prevent future attacks. It should be used in patients 12 years of age and older with or without concurrenttheophylline and/or inhaledcorticosteroid.^[2]^[3]

Mode of action

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Further information:Beta2-adrenergic agonist

Pharmacokinetics

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After inhalation of doses up to 800μg (twice the maximum recommended dose) systemic blood levels of pirbuterol are below the limit of assay sensitivity (2–5 ng/ml). A mean of 51% of the dose is recovered in urine as pirbuterol plus its sulfate conjugate following administration by aerosol. Pirbuterol is not metabolized bycatechol-O-methyltransferase. The plasma half-life measured after oral administration is about two hours.^[2]

Adverse effects

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Further information:Beta2-adrenergic agonist

References

[edit]

^Fischer J, Ganellin CR (2006).Analogue-based Drug Discovery. John Wiley & Sons. p. 543.ISBN 9783527607495.
^^a ^b"Maxair Autohaler (pirbuterol acetate inhalation aerosol) For Oral Inhalation Only. U.S. Full Prescribing Information". 3M Pharmaceuticals. Northridge, CA 91324. Archived fromthe original on 20 September 2018. Retrieved7 March 2016.
^Bianchi M, Clavenna A, Bonati M (September 2010)."Inter-country variations in anti-asthmatic drug prescriptions for children. Systematic review of studies published during the 2000-2009 period"(PDF).European Journal of Clinical Pharmacology.66 (9):929–36.doi:10.1007/s00228-010-0845-y.PMID 20533030.S2CID 21834280.

External links

[edit]

RxList: Maxair (Pirbuterol)

Adrenergic receptor modulators

α₁

Agonists

Antagonists

α₂

Agonists

Antagonists

Agonists

Antagonists

See also:Receptor/signaling modulators
Dopaminergics
Serotonergics
Monoamine reuptake inhibitors
Monoamine releasing agents
Monoamine metabolism modulators
Monoamine neurotoxins

Drugs forobstructive airway diseases:asthma/COPD (R03)

Adrenergics,inhalants

Short-acting β₂ agonists	Bitolterol Carbuterol Fenoterol Isoetarine Pirbuterol Procaterol Reproterol Rimiterol Salbutamol (albuterol)^#/Levosalbutamol (levalbuterol) Terbutaline Tulobuterol
Long-acting β₂ agonists	Bambuterol Clenbuterol Formoterol/Arformoterol Salmeterol
Ultra-long-acting β₂ agonists	Abediterol Carmoterol Indacaterol Olodaterol Vilanterol
Other	Clorprenaline Ephedrine (+theophylline,+theophylline/phenobarbital,theophylline/hydroxyzine) Epinephrine^# Etafedrine Hexoprenaline Isoprenaline (isoproterenol) Methylephedrine Orciprenaline (metaproterenol) Racephedrine Tretoquinol

Glucocorticoids

Anticholinergics/
muscarinic antagonist

Mast cell stabilizers

Xanthines

Eicosanoid inhibition

Leukotriene antagonists	Montelukast Pranlukast Zafirlukast
Arachidonate 5-lipoxygenase inhibitors	Zileuton
Thromboxane receptor antagonists	Ramatroban Seratrodast
Non-xanthinePDE4 inhibitors	Ibudilast Roflumilast

Others/unknown

Combination products

^#WHO-EM
^‡Withdrawn from market
Clinical trials:
- ^†Phase III
- ^§Never to phase III

v t e Phenethylamines
Phenethylamines	Psychedelics:25B-NBOMe 25C-NBOMe 25D-NBOMe 25I-NBOMe 25N-NBOMe 2C-B 2C-B-AN 2C-Bn 2C-Bu 2C-C 2C-CN 2C-CP 2C-D 2C-E 2C-EF 2C-F 2C-G 2C-G-1 2C-G-2 2C-G-3 2C-G-4 2C-G-5 2C-G-6 2C-G-N 2C-H 2C-I 2C-iBu 2C-iP 2C-N 2C-NH2 2C-O 2C-O-4 2C-P 2C-Ph 2C-SE 2C-T 2C-T-2 2C-T-3 2C-T-4 2C-T-5 2C-T-6 2C-T-7 2C-T-8 2C-T-9 2C-T-10 2C-T-11 2C-T-12 2C-T-13 2C-T-14 2C-T-15 2C-T-16 2C-T-17 2C-T-18 2C-T-19 2C-T-20 2C-T-21 2C-T-22 2C-T-22.5 2C-T-23 2C-T-24 2C-T-25 2C-T-27 2C-T-28 2C-T-30 2C-T-31 2C-T-32 2C-T-33 2C-tBu 2C-TFE 2C-TFM 2C-YN 2C-V Allylescaline DESOXY Escaline Isoproscaline Jimscaline Macromerine MEPEA Mescaline Metaescaline Methallylescaline Proscaline Psi-2C-T-4 TCB-2 Stimulants:Phenylethanolamine Hordenine Phenethylamine Phenpromethamine α-Methylphenethylamine (amphetamine) β-Methylphenethylamine m-Methylphenethylamine N-Methylphenethylamine o-Methylphenethylamine p-Methylphenethylamine Methylphenidate Entactogens:Lophophine MDPEA MDMPEA Others:Biscaline BOH Buscaline DMPEA
Amphetamines	Psychedelics:3C-AL 3C-BZ 3C-E 3C-MAL 3C-P Aleph Beatrice Bromo-DragonFLY D-Deprenyl DMA DMCPA DMMDA DOB DOC DOEF DOET DOI DOM DON DOPR DOTFM Ganesha MMDA MMDA-2 Psi-DOM TMA TeMA ZDCM-04 Stimulants:2-FA 2-FMA 3-FA 3-FMA Acridorex Alfetamine Amfecloral Amfepentorex Amphetamine (Dextroamphetamine,Levoamphetamine) Amphetaminil Benfluorex Benzphetamine Cathine Clobenzorex Dimethylamphetamine Ephedrine Etilamfetamine Fencamfamin Fencamine Fenethylline Fenfluramine (Dexfenfluramine,Levofenfluramine) Fenproporex Flucetorex Fludorex Formetorex Furfenorex Gepefrine 4-Hydroxyamphetamine Iofetamine Isopropylamphetamine Lefetamine Lisdexamfetamine Mefenorex Metaraminol Methamphetamine (Dextromethamphetamine,Levomethamphetamine) Methoxyphenamine MMA Morforex Norfenfluramine L-Norpseudoephedrine N,alpha-Diethylphenylethylamine Oxifentorex Oxilofrine Ortetamine PBA PCA PFA PFMA PIA PMA PMEA PMMA Phenylpropanolamine Pholedrine Prenylamine Propylamphetamine Pseudoephedrine Sibutramine Tiflorex Tranylcypromine Xylopropamine Zylofuramine Entactogens:4-FA 4-FMA 4-MA 4-MMA 4-MTA 5-APB 5-APDB 5-EAPB 5-IT 5-MAPB 5-MAPDB 6-APB 6-APDB 6-Chloro-MDMA 6-EAPB 6-IT 6-MAPB 6-MAPDB EDA IAP 2,3-MDA 3,4-MDA (tenamfetamine) MDEA MDHMA MDMA (midomafetamine) MDOH Methamnetamine MMDMA Naphthylaminopropane TAP Others:3,4-DCA Amiflamine DiFMDA Selegiline (alsoD-Deprenyl)
Phentermines	Stimulants:Chlorphentermine Cloforex Clortermine Etolorex Mephentermine Pentorex Phentermine Entactogens:MDPH MDMPH Others:Cericlamine
Cathinones	Stimulants:3-FMC 4-MC 4-BMC 4-CMC 4-EMC 4-FMC 4-MEC 4-MeMABP 4-MPD Amfepramone Benzedrone Brephedrone Buphedrone Bupropion Cathinone Dimethylcathinone Ethcathinone Eutylone Hydroxybupropion Methcathinone Methedrone NEB N-Ethylhexedrone N-Ethylpentedrone Pentedrone Pentylone Radafaxine Entactogens:3,4-DMMC 3-MMC Butylone Ethylone Methylone Methylenedioxycathinone Mephedrone Propylone
Phenylisobutylamines	Entactogens:4-CAB 4-MAB Ariadne BDB Butylone EBDB Eutylone MBDB Stimulants:Phenylisobutylamine
Phenylalkylpyrrolidines	Stimulants:α-PBP α-PHP α-PPP α-PVP MDPBP MDPPP MDPV 4-MePBP 4-MePHP 4-MePPP MOPPP MOPVP MPBP MPHP MPPP Naphyrone PEP Prolintane Pyrovalerone
Catecholamines (and close relatives)	6-FNE 6-OHDA a-Me-DA a-Me-TRA Adrenochrome Ciladopa D-DOPA (Dextrodopa) Dimetofrine Dopamine Epinephrine Epinine Etilefrine Ethylnorepinephrine Fenclonine Ibopamine Isoprenaline Isoetarine L-DOPA (Levodopa) L-DOPS (Droxidopa) L-Phenylalanine L-Tyrosine m-Tyramine Metanephrine Metaraminol Metaterol Metirosine Methyldopa N,N-Dimethyldopamine Nordefrin (Levonordefrin) Norepinephrine Norfenefrine (m-Octopamine) Normetanephrine Orciprenaline p-Octopamine p-Tyramine Phenylephrine Synephrine
Miscellaneous	AL-LAD Amidephrine Arbutamine Cafedrine Denopamine Desvenlafaxine Diphenidine Dizocilpine Dobutamine Dopexamine Ephenidine Etafedrine ETH-LAD Famprofazone Fluorolintane Hexapradol IP-LAD Lysergic acid amide Lysergic acid 2-butyl amide Lysergic acid 2,4-dimethylazetidide Lysergic acid diethylamide Methoxamine Methoxphenidine MT-45 PARGY-LAD Phenibut PRO-LAD Pronethalol Salbutamol (Levosalbutamol) Solriamfetol Theodrenaline Thiamphenicol UWA-101 Venlafaxine

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