Xylazine: Definition from Answers.com

Xylazine
Systematic (IUPAC) name

N-(2,6-dimethylphenyl)-5,6-dihydro-4H-1,3-thiazin-2-amine
Identifiers
CAS number	7361-61-7
ATCvet code	QN05CM92
PubChem	5707
Chemical data
Formula	C₁₂H₁₆N₂S
Mol. mass	220.33
Pharmacokinetic data
Bioavailability	?
Metabolism	?
Half life	?
Excretion	?
Therapeutic considerations
Pregnancy cat.	?
Legal status	Veterinary Use
Routes	?
Y(what is this?) (verify)

Xylazine is a drug that is used for sedation, anesthesia, muscle relaxation, and analgesia in animals such as horses, cattle and other non-human mammals. An analogue of clonidine, it is an agonist at the α₂ class of adrenergic receptor. As with other α₂ agonists, adverse effects include bradycardia, conduction disturbances, and myocardial depression. Yohimbine (Yobine) and atipamezole (commercial name Antisedan) can be used to reverse xylazine effects. In veterinary anesthesia, xylazine is often used in combination with ketamine. No formal information in humans is available. Xylazine is sold by Bayer under the brand name Rompun.

use as emetic in cats

Veterinarians use xylazine as an emetic when it is desirable to remove a substance from a cat's stomach. In one trial, pilocarpine was used instead of xylazine.

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References

McCurnin, DM, and JM Bassert. Clinical Textbook for Veterinary Technicians, 5th ed. Saunders, Philadelphia, PA. 2002.
Bayer Healthcare - Rompun Homepage http://www.rompun.com/. 2005.
Wright, Dr. Bob. Human Health Concerns When Working With Medications Around Horses. Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA). http://www.omafra.gov.on.ca/english/livestock/horses/facts/00-063.html. 2005.

Adrenergics

Receptor
Ligands

α₁	Agonists: Amidephrine • Cirazoline • Dopamine • Epinephrine (Adrenaline) • Etilefrine • Isoprenaline • Levonordefrin • Metaraminol • Methoxamine • Methyldopa • Norepinephrine (Noradrenaline) • Oxymetazoline • Phenylephrine Antagonists: Alfuzosin • Arotinolol • Carvedilol • Doxazosin • Indoramin • L-765,314 • Labetalol • Moxisylyte • Nantenine • Phentolamine • Phenoxybenzamine • Prazosin • Silodosin • Tamsulosin • Terazosin • Tolazoline • Trimazosin • Urapidil

α₂	Agonists: (R)-3-Nitrobiphenyline • 4-NEMD • Amitraz • Apraclonidine • Brimonidine • Clonidine • Detomidine • Dexmedetomidine • Dopamine • Epinephrine (Adrenaline) • Etilefrine • Guanabenz • Guanfacine • Guanethidine • Guanoxabenz • Levonordefrin • Lofexidine • Medetomidine • Methyldopa • Norepinephrine (Noradrenaline) • Octopamine • Romifidine • Tizanidine • Tolonidine • Xylazine • Xylometazoline Antagonists: 1-PP • Atipamezole • BRL-44408 • Buspirone • Cirazoline • Efaroxan • Gepirone • Idazoxan • Ipsapirone • Mianserin • Mirtazapine • NAN-190 • Phentolamine • Phenoxybenzamine • Rauwolscine • SB-269,970 • Setiptiline • Spiroxatrine • Tandospirone • Tolazoline • Yohimbine

α_?	Agonists: Anisodamine • Ephedrine • Ergotamine • Indanidine • Mephentermine • Midodrine • Mivazerol • Naphazoline • Phenylpropanolamine • Pseudoephedrine • Rilmenidine • Synephrine • Talipexole • Tetrahydrozoline

β₁	Agonists: Denopamine • Dobutamine • Dopamine • Epinephrine (Adrenaline) • Etilefrine • Levonordefrin • Methyldopa • Norepinephrine (Noradrenaline) Antagonists: Acebutolol • Alprenolol • Amosulalol • Arotinolol • Atenolol • Bupranolol • Carvedilol • Celiprolol • Betaxolol • Bisoprolol • Dichloroisoprenaline • Esmolol • Labetalol • Metipranolol • Metoprolol • Nadolol • Nebivolol • Oxprenolol • Penbutolol • Pindolol • Practolol • Pronethalol • Propranolol • Sotalol • Tertatolol • Timolol • Tilisolol • Xamoterol

β₂	Agonists: Arformoterol • Bambuterol • Bitolterol • Carbuterol • Clenbuterol • Dopamine • Dopexamine • Epinephrine (Adrenaline) • Etilefrine • Fenoterol • Formoterol • Hexoprenaline • Indacaterol • Levonordefrin • Levosalbutamol • Methyldopa • Norepinephrine (Noradrenaline) • Orciprenaline • Pirbuterol • Procaterol • Reproterol • Rimiterol • Ritodrine • Salbutamol (Albuterol) • Salmeterol • Terbutaline • Tulobuterol Antagonists: Alprenolol • Amosulalol • Arotinolol • Bupranolol • Butaxamine • Carvedilol • Dichloroisoprenaline • ICI 118551 • Labetalol • Metipranolol • Nadolol • Oxprenolol • Penbutolol • Pindolol • Pronethalol • Propranolol • Sotalol • Tertatolol • Timolol • Tilisolol

β₃	Agonists: Amibegron • Arotinolol • Dopamine • Epinephrine (Adrenaline) • Etilefrine • Labetalol • Levonordefrin • Methyldopa • Norepinephrine (Noradrenaline) • Solabegron Antagonists: Carvedilol • SR 59230A

β_?	Agonists: Arbutamine • BAAM • Befunolol • Broxaterol • Buphenine • Cimaterol • Ephedrine • Higenamine • Isoetarine • Isoxsuprine • Mabuterol • Methoxyphenamine • Oxyfedrine • Prenalterol • Pseudoephedrine • Ractopamine • Tretoquinol • Zilpaterol • Zinterol

Reuptake
Inhibitors

Plasmalemmal

NET Inhibitors	Norepinephrine Reuptake Inhibitors: Atomoxetine (Tomoxetine) • Ciclazindol • Mazindol • Nisoxetine • Reboxetine • Tandamine • Tapentadol • Viloxazine; Norepinephrine-Dopamine Reuptake Inhibitors: Amineptine • Bupropion (Amfebutamone) • Fencamine • Fencamfamine • Lefetamine • LR-5182 • Manifaxine • Methylphenidate • Nomifensine • O-2172 • Radafaxine; Serotonin-Norepinephrine Reuptake Inhibitors: Bicifadine • Desvenlafaxine • Duloxetine • Milnacipran • Sibutramine • Tramadol • Venlafaxine; Serotonin-Norepinephrine-Dopamine Reuptake Inhibitors: Brasofensine • Diclofensine • DOV-102,677 • DOV-21,947 • DOV-216,303 • JNJ-7925476 • JZ-IV-10 • Methylnaphthidate • Naphyrone • NS-2359 • PRC200-SS • SEP-225,289 • SEP-227,162 • Tesofensine; Tricyclic Antidepressants: Amitriptyline • Butriptyline • Cianopramine • Clomipramine • Desipramine • Dosulepin • Doxepin • Imipramine • Lofepramine • Nortriptyline • Protriptyline • Trimipramine; Tetracyclic Antidepressants: Amoxapine • Maprotiline • Mianserin • Oxaprotiline; Others: Cocaine • Nefazodone • Nefopam • Ziprasidone

TRPC6 Activators	Adhyperforin • Hyperforin

Vesicular

VMAT Inhibitors

Ibogaine • Reserpine • Tetrabenazine

Releasing
Agents

Morpholines: Oxaflozane • Phendimetrazine • Phenmetrazine; Oxazolines: 4-Methylaminorex (4-MAR, 4-MAX) • Aminorex • Clominorex • Cyclazodone • Fenozolone • Fluminorex • Pemoline • Thozalinone; Phenethylamines (also Amphetamines, Cathinones, Phentermines, etc): 2-Hydroxyphenethylamine (2-OH-PEA) • 4-Methylamphetamine (4-MA) • 4-Methylmethamphetamine (4-MMA) • Alfetamine • Amfecloral • Amfepentorex • Amphetamine (Dextroamphetamine, Levoamphetamine) • Amphetaminil • β-Methylphenethylamine (β-Me-PEA) • Benzodioxolylbutanamine (BDB) • Benzodioxolylhydroxybutanamine (BOH) • Benzphetamine • Buphedrone • Butylone • Cathine • Cathinone • Clobenzorex • Clortermine • Diethylcathinone (Diethylpropion, Amfepramone) • Dimethoxyamphetamine (DMA) • Dimethoxymethamphetamine (DMMA) • Dimethylamphetamine • Dimethylcathinone (Dimethylpropion, Metamfepramone) • Ephedrine (EPH) • Ethcathinone (Ethylpropion) • Ethylamphetamine • Ethylbenzodioxolylbutanamine (EBDB) • Ethylone • Fenethylline • Fenproporex • Flephedrone • Fludorex • Furfenorex • Hordenine • Indanorex • Lisdexamfetamine • Lophophine (Homomyristicylamine) • Mefenorex • Mephedrone • Mephentermine • Methamphetamine (Desoxyephedrine, Methedrine; Dextromethamphetamine, Levomethamphetamine) • Methcathinone (Methylpropion) • Methedrone • Methoxymethylenedioxyamphetamine (MMDA) • Methoxymethylenedioxymethamphetamine (MMDMA) • Methylbenzodioxolylbutanamine (MBDB) • Methylenedioxyamphetamine (MDA; Tenamfetamine) • Methylenedioxyethylamphetamine (MDEA) • Methylenedioxyhydroxyamphetamine (MDOH) • Methylenedioxymethamphetamine (MDMA) • Methylenedioxymethylphenethylamine (MDMPEA; Homarylamine) • Methylenedioxyphenethylamine (MDPEA; Homopiperonylamine) • Methylone • Ortetamine • Parabromoamphetamine (PBA) • Parachloroamphetamine (PCA) • Parafluoroamphetamine (PFA) • Parafluoromethamphetamine (PFMA) • Parahydroxyamphetamine (PHA) • Paraiodoamphetamine (PIA) • Paramethoxyamphetamine (PMA) • Paramethoxyethylamphetamine (PMEA) • Paramethoxymethamphetamine (PMMA) • Paredrine (Norpholedrine, Oxamphetamine) • Phenethylamine (PEA) • Pholedrine • Phenpentermine • Phenpromethamine • Phentermine • Phenylpropanolamine (PPA) • Prenylamine • Propylamphetamine • Pseudoephedrine (PSE) • Tiflorex (Flutiorex) • Tyramine (TRA) • Xylopropamine • Zylofuramine; Piperazines: 2,5-Dimethoxy-4-bromobenzylpiperazine (2C-B-BZP) • Benzylpiperazine (BZP) • Methoxyphenylpiperazine (MeOPP; Paraperazine) • Methylbenzylpiperazine (MBZP) • Methylenedioxybenzylpiperazine (MDBZP; Piperonylpiperazine) • Parafluorophenylpiperazine (pFPP; Fluoperazine); Others: 2-Amino-1,2-dihydronaphthalene (2-ADN) • 2-Aminoindane (2-AI) • 2-Aminotetralin (2-AT) • 2-Benzylpiperidine (2-BP) • 4-Benzylpiperidine (4-BP) • Clofenciclan • Cyclopentamine • Cypenamine • Cyprodenate • Feprosidnine • Gilutensin • Heptaminol • Hexacyclonate • Indanylaminopropane (IAP) • Isometheptene • Methylhexanamine • Naphthylaminopropane (NAP) • Octodrine • Phthalimidopropiophenone • Propylhexedrine (PHX) • Tuaminoheptane (Tuamine)

Enzyme
Inhibitors

Anabolism

PAH Inhibitors	3,4-Dihydroxystyrene

TH Inhibitors	3-Iodotyrosine • Aquayamycin • Bulbocapnine • Metirosine • Oudenone

AAAD Inhibitors	Benserazide • Carbidopa

DBH Inhibitors	Disulfiram • Nepicastat • Tropolone

PNMT Inhibitors	CGS-19281A • SKF-64139 • SKF-7698

Catabolism

MAO Inhibitors	Nonselective: Etryptamine • Furazolidone • Hydralazine • Iproclozide • Iproniazid • Isocarboxazid • Isoniazid • Linezolid • Mebanazine • Metryptamine • Nialamide • Phenelzine • Pheniprazine • Phenoxypropazine • Pivalylbenzhydrazine • Procarbazine • Safrazine • Tranylcypromine; MAO-A Selective: Befloxatone • Brofaromine • Cimoxatone • Clorgiline • Harmala Alkaloids (Harmine, Harmaline, Tetrahydroharmine, etc) • Minaprine • Moclobemide • Pirlindole • Toloxatone • Tyrima; MAO-B Selective: Ladostigil • Lazabemide • Pargyline • Rasagiline • Selegiline * Note that MAO-B inhibitors also influence norepinephrine/epinephrine levels since they inhibit the breakdown of their precursor dopamine.

COMT Inhibitors	Entacapone • Tolcapone

Others

Precursors	L-Phenylalanine → L-Tyrosine → L-DOPA (Levodopa) → Dopamine • L-DOPS (Droxidopa)

Cofactors	Ferrous Iron (Fe²⁺) • S-Adenosyl-L-Methionine • Vitamin B3 (Niacin, Nicotinamide → NADPH) • Vitamin B6 (Pyridoxine, Pyridoxamine, Pyridoxal → Pyridoxal Phosphate) • Vitamin B9 (Folic Acid → Tetrahydrofolic Acid) • Vitamin C (Ascorbic Acid) • Zinc (Zn²⁺)

Others	Activity Enhancers: Benzofuranylpropylaminopentane (BPAP) • Phenylpropylaminopentane (PPAP); Release Blockers: Bretylium • Guanethidine

Hypnotics/Sedatives (N05C)

GABA_A receptor

Barbiturates

Ultrashort-acting	Methohexital • Thiamylal • Thiopental

Short/intermediate- acting	Allobarbital • Amobarbital • Aprobarbital • Butobarbital • Pentobarbital • Secobarbital • Talbutal

Long-acting	Barbital • Mephobarbital • Phenobarbital

Ungrouped	Cyclobarbital • Ethallobarbital • Heptabarbital • Hexobarbital • Proxibarbal • Reposal • Vinylbital • Vinbarbital

Benzodiazepines

Short-acting	Brotizolam • Cinolazepam • Doxefazepam • Loprazolam • Midazolam • Triazolam

Intermediate-acting	Estazolam • Flunitrazepam • Lormetazepam • Nimetazepam • Temazepam

Long-acting	Flurazepam • Flutoprazepam • Nitrazepam • Quazepam

Dialkylphenols

Fospropofol • Propofol • Thymol

Nonbenzo-
diazepines

CL-218,872 • Eszopiclone • Indiplon • Necopidem • Pazinaclone • ROD-188 • Saripidem • Suproclone • Suriclone • SX-3228 • U-89843A • U-90042 • Zaleplon • Zolpidem • Zopiclone

Piperidinediones

Glutethimide • Methyprylon • Pyrithyldione • Piperidione

Quinazolinones

Afloqualone • Cloroqualone • Diproqualone • Etaqualone • Mebroqualone • Mecloqualone • Methaqualone • Methylmethaqualone

Neuroactive
steroids

Acebrochol • Allopregnanolone • Alphadolone • Alphaxolone • Ganaxolone • Hydroxydione • Minaxolone • Org 20599 • Tetrahydrodeoxycorticosterone

Alpha-2 adrenergic
receptor

Alpha-adrenergic agonists

4-NEMD • Clonidine • Dexmedetomidine • Lofexidine • Medetomidine • Romifidine • Tizanidine • Xylazine

Melatonin receptor

Melatonin

Agomelatine • Melatonin • Ramelteon • Tasimelteon • Circadin

Histamine receptor &
Acetylcholine receptor

Antihistamines &
Anticholinergics

Amitriptyline • Dimenhydrinate • Doxylamine • Hydroxyzine • Diphenhydramine • Bromodiphenhydramine • Carbinoxamine • Doxepin • Orphenadrine • Mianserin • Mirtazapine • Nefazodone • Niaprazine • Phenyltoloxamine • Propiomazine • Pyrilamine • Scopolamine • Trazodone

GABA_B receptor /
GHB receptor

GHB Type

1,4-Butanediol • Aceburic acid • GABOB • GHB (Sodium Oxybate, Xyrem®) • GBL • gamma-Valerolactone

Orexin receptors

Orexin antagonists

Almorexant • SB-334,867 • SB-408,124 • SB-649,868 • TCS-OX2-29

Other receptors/
ungrouped

Aldehydes	Acetylglycinamide chloral hydrate • Chloral hydrate • Chloralodol • Dichloralphenazone • Paraldehyde • Petrichloral

Alkynes	Centalun • Ethchlorvynol • Ethinamate • Hexapropymate • Methylpentynol

Carbamates	Meprobamate • Carisoprodol • Tybamate • Methocarbamol • Procymate

Other	2-Methyl-2-butanol • Acecarbromal • Acetophenone • Apronal • Bromides • Bromisoval • Carbromal • Chloralose • Clomethiazole • Embutramide • Etomidate • Evoxine • Fenadiazole • Gaboxadol • Loreclezole • Mephenoxalone • Sulfonmethane • Trichloroethanol • Triclofos • Valerian • Valnoctamide

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		Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved. Read more
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