Talbutal |
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| Other names | 5-(1-methylpropyl)-5-(2-propenyl)-2,4,6(1H,3H,5H)-pyrimidinetrione |
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| ATC code | |
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| Legal status |
- CA: Schedule IV
- US: Schedule III
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(RS)-5-allyl-5-sec-butylpyrimidine-2,4,6(1H,3H,5H)-trione
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| DrugBank | |
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| ChEMBL | |
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| CompTox Dashboard (EPA) | |
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| ECHA InfoCard | 100.003.719 |
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| Formula | C11H16N2O3 |
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| Molar mass | 224.260 g·mol−1 |
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| 3D model (JSmol) | |
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O=C1NC(=O)NC(=O)C1(C(C)CC)C\C=C
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InChI=1S/C11H16N2O3/c1-4-6-11(7(3)5-2)8(14)12-10(16)13-9(11)15/h4,7H,1,5-6H2,2-3H3,(H2,12,13,14,15,16) YKey:BJVVMKUXKQHWJK-UHFFFAOYSA-N Y
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N Y (what is this?) (verify) |
Talbutal (Lotusate) is a barbiturate with a short to intermediate duration of action. It is a structural isomer of butalbital. Talbutal is a schedule III drug in the U.S.
Pharmacology
Talbutal is a short to intermediate-acting barbiturate. Barbiturates act as nonselective depressants of the central nervous system (CNS), capable of producing all levels of CNS mood alteration from excitation to mild sedation, hypnosis, and deep coma. In sufficiently high therapeutic doses, barbiturates induce anesthesia.[1]
Mechanism of action
Talbutal binds at a distinct binding site associated with a Cl− ionophore at the GABAA receptor, increasing the duration of time for which the Cl− ionophore is open. The post-synaptic inhibitory effect of GABA in the thalamus is, therefore, prolonged.
Toxicity
Symptoms of acute barbiturate poisoning include drowsiness, confusion, coma, respiratory depression, hypotension,[1] and shock.
References
- ^ a b Mutschler E, Schäfer-Korting M (2001). Arzneimittelwirkungen (in German) (8 ed.). Stuttgart: Wissenschaftliche Verlagsgesellschaft. pp. 280ff. ISBN 3-8047-1763-2.
Hypnotics/sedatives (N05C) |
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| GABAA | | Alcohols | |
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| Barbiturates | |
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| Benzodiazepines | |
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| Carbamates | |
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| Imidazoles | |
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| Monoureides |
- Acecarbromal
- Apronal (apronalide)
- Bromisoval
- Capuride
- Carbromal
- Ectylurea
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| Neurosteroids | |
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| Nonbenzodiazepines | |
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| Phenols |
- Cipepofol (ciprofol)
- Fospropofol
- Propofol
- Propofol hemisuccinate
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| Piperidinediones | |
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| Quinazolinones |
- Afloqualone
- Cloroqualone
- Diproqualone
- Etaqualone
- Mebroqualone
- Mecloqualone
- Methaqualone
- Methylmethaqualone
- Nitromethaqualone
- SL-164
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| Others | |
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| GABAB | |
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| H1 | | Antihistamines | |
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| Antidepressants |
- Serotonin antagonists and reuptake inhibitors
- Tricyclic antidepressants
- Tetracyclic antidepressants
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| Antipsychotics |
- Typical antipsychotics
- Atypical antipsychotics
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| α2-Adrenergic | |
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| 5-HT2A | | Antidepressants |
- Trazodone
- Tricyclic antidepressants
- Tetracyclic antidepressants
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| Antipsychotics |
- Typical antipsychotics
- Atypical antipsychotics
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| Others | |
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| Melatonin | |
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| Orexin |
- Daridorexant
- Lemborexant
- Suvorexant
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| α2δ VDCC | |
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| Others | |
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GABAA receptor positive modulators |
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| Alcohols | |
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| Barbiturates | |
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| Benzodiazepines | |
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| Carbamates |
- Carisbamate
- Carisoprodol
- Clocental
- Cyclarbamate
- Difebarbamate
- Emylcamate
- Ethinamate
- Febarbamate
- Felbamate
- Hexapropymate
- Hydroxyphenamate
- Lorbamate
- Mebutamate
- Meprobamate
- Nisobamate
- Pentabamate
- Phenprobamate
- Procymate
- Styramate
- Tetrabamate
- Tybamate
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| Flavonoids | |
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| Imidazoles |
- Etomidate
- Metomidate
- Methoxyetomidate
- Propoxate
- Isopropoxate
- Butomidate
- Iso-butomidate
- Sec-butomidate
- CF2-Etomidate
- CF3-Etomidate
- CF3-Propoxate
- Flutomidate
- 2,6-Dichloro-3-fluoroetomidate
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| Kava constituents |
- 10-Methoxyyangonin
- 11-Methoxyyangonin
- 11-Hydroxyyangonin
- Desmethoxyyangonin
- 11-Methoxy-12-hydroxydehydrokavain
- 7,8-Dihydroyangonin
- Kavain
- 5-Hydroxykavain
- 5,6-Dihydroyangonin
- 7,8-Dihydrokavain
- 5,6,7,8-Tetrahydroyangonin
- 5,6-Dehydromethysticin
- Methysticin
- 7,8-Dihydromethysticin
- Yangonin
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| Monoureides |
- Acecarbromal
- Apronal (apronalide)
- Bromisoval
- Carbromal
- Capuride
- Ectylurea
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| Neuroactive steroids | |
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| Nonbenzodiazepines |
- Imidazopyridines: Alpidem
- DS-1
- Necopidem
- Saripidem
- Zolpidem
- Pyrazolopyrimidines: Divaplon
- Fasiplon
- Indiplon
- Lorediplon
- Ocinaplon
- Panadiplon
- Taniplon
- Zaleplon
- Others: Adipiplon
- AXS-17 (BAER-101, AZD-7325)
- CGS-8216
- CGS-9896
- CGS-13767
- CGS-20625
- CL-218,872
- CP-615,003
- CTP-354
- ELB-139
- GBLD-345
- Imepitoin
- JM-1232
- L-838,417
- Lirequinil (Ro41-3696)
- Miltirone (rosmariquinone)
- NS-2664
- NS-2710
- NS-11394
- Pipequaline
- ROD-188
- RWJ-51204
- SB-205,384
- SX-3228
- TGSC01AA
- TP-003
- TPA-023
- TP-13
- U-89843A
- U-90042
- Viqualine
- Y-23684
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| Phenols | |
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| Piperidinediones | |
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| Pyrazolopyridines |
- Cartazolate
- Etazolate
- ICI-190,622
- Tracazolate
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| Quinazolinones |
- Afloqualone
- Cloroqualone
- Diproqualone
- Etaqualone
- Mebroqualone
- Mecloqualone
- Methaqualone
- Methylmethaqualone
- Nitromethaqualone
- SL-164
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| Volatiles/gases | |
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| Others/unsorted |
- 3-Hydroxybutanal
- α-EMTBL
- AA-29504
- Alogabat
- Avermectins (e.g., ivermectin)
- Bromide compounds (e.g., lithium bromide, potassium bromide, sodium bromide)
- Carbamazepine
- Chloralose
- Chlormezanone
- Clomethiazole
- Darigabat
- DEABL
- Deuterated etifoxine
- Dihydroergolines (e.g., dihydroergocryptine, dihydroergosine, dihydroergotamine, ergoloid (dihydroergotoxine))
- DS2
- Efavirenz
- Etazepine
- Etifoxine
- Fenamates (e.g., flufenamic acid, mefenamic acid, niflumic acid, tolfenamic acid)
- Fluoxetine
- Flupirtine
- Hopantenic acid
- KRM-II-81
- Lanthanum
- Lavender oil
- Lignans (e.g., 4-O-methylhonokiol, honokiol, magnolol, obovatol)
- Loreclezole
- Menthyl isovalerate (validolum)
- Monastrol
- Nicotinic acid
- Nicotinamide
- Org 25,435
- Phenytoin
- Propanidid
- Retigabine (ezogabine)
- Safranal
- Seproxetine
- Stiripentol
- Sulfonylalkanes (e.g., sulfonmethane (sulfonal), tetronal, trional)
- Terpenoids (e.g., borneol)
- Topiramate
- Valerian constituents (e.g., isovaleric acid, isovaleramide, valerenic acid, valerenol)
- Unsorted benzodiazepine site positive modulators: α-Pinene
- MRK-409 (MK-0343)
- TCS-1105
- TCS-1205
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See also: Receptor/signaling modulators • GABA receptor modulators • GABA metabolism/transport modulators |