Banner
targets (10)
for drugs
Identification
Name Butalbital
Accession Number DB00241 (APRD00266)
Type small molecule
Groups illicit, approved
Description

Butalbital, 5-allyl-5-isobutylbarbituric acid, is a barbiturate with an intermediate duration of action. It has the same chemical formula as talbutal but a different structure. Butalbital is often combined with other medications, such as acetaminophen or aspirin, and is commonly prescribed for the treatment of pain and headache. [Wikipedia]
Structure Thumb
Download: MOL | SDF | SMILES | InChI
Display: 2D Structure | 3D Structure
Synonyms
  • Allylbarbital
  • Butalbital M (OH)
Brand names Not Available
Brand name mixtures
  • Fiorinal C1/2 Cap (Acetylsalicylic Acid + Butalbital + Caffeine + Codeine Phosphate)
  • Fiorinal C1/4 Cap (Acetylsalicylic Acid + Butalbital + Caffeine + Codeine Phosphate)
  • Fiorinal Tab (Acetylsalicylic Acid + Butalbital + Caffeine)
  • Ratio-Tecnal (Acetylsalicylic Acid + Butalbital + Caffeine)
  • Ratio-Tecnal C 1/2 (Acetylsalicylic Acid + Butalbital + Caffeine + Codeine Phosphate)
  • Ratio-Tecnal C1/4 (Acetylsalicylic Acid + Butalbital + Caffeine + Codeine Phosphate)
  • Trianal Capsules (Acetylsalicylic Acid + Butalbital + Caffeine)
  • Trianal Tablet (Acetylsalicylic Acid + Butalbital + Caffeine)
  • Trianal-C 1/2 Capsule (Acetylsalicylic Acid + Butalbital + Caffeine + Codeine Phosphate)
Categories
  • Analgesics
CAS number 77-26-9
Weight Average: 224.2563
Monoisotopic: 224.116092388
Chemical Formula C11H16N2O3
InChI Key InChIKey=UZVHFVZFNXBMQJ-UHFFFAOYSA-N
InChI
InChI=1S/C11H16N2O3/c1-4-5-11(6-7(2)3)8(14)12-10(16)13-9(11)15/h4,7H,1,5-6H2,2-3H3,(H2,12,13,14,15,16)
Plain Text
IUPAC Name
5-(2-methylpropyl)-5-(prop-2-en-1-yl)-1,3-diazinane-2,4,6-trione
SMILES
CC(C)CC1(CC=C)C(=O)NC(=O)NC1=O
Plain Text
Mass Spec Not Available
Taxonomy
Kingdom Organic
Classes
  • Barbiturates
Substructures
  • Barbiturates
  • Carbonyl Compounds
  • Alkanes and Alkenes
  • Carboxylic Acids and Derivatives
  • Amino Ketones
  • Ureas and Derivatives
  • Pyrimidines and Derivatives
  • Heterocyclic compounds
  • Carboxamides and Derivatives
Pharmacology
Indication Used in combination with acetaminophen or aspirin and caffeine for its sedative and relaxant effects in the treatment of tension headaches, migraines, and pain.
Pharmacodynamics Butalbital 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.
Mechanism of action Butalbital binds at a distinct binding site associated with a Cl- ionopore at the GABAA receptor, increasing the duration of time for which the Cl- ionopore is open. The post-synaptic inhibitory effect of GABA in the thalamus is, therefore, prolonged.
Absorption Well absorbed from the gastrointestinal tract and is expected to distribute to most tissues in the body.
Volume of distribution Not Available
Protein binding 45%
Metabolism

Hepatic, although most of the dose is eliminated via the kidney (59 to 88%). Urinary excretion products included parent drug (about 3.6% of the dose), 5-isobutyl-5-(2,3-dihydroxypropyl) barbituric acid (about 24% of the dose), 5-allyl-5(3-hydroxy-2-methyl-1-propyl) barbituric acid (about 4.8%).
Route of elimination Not Available
Half life 35 hours
Clearance Not Available
Toxicity Symptoms of acute barbiturate poisoning include drowsiness, confusion, coma, respiratory depression, hypotension, and shock.
Affected organisms
  • Humans and other mammals
Pathways Not Available
Pharmacoeconomics
Manufacturers Not Available
Packagers
Dosage forms
Form Route Strength
Tablet Oral
Prices
Unit description Cost Unit
Butalbital powder 3.83 USD g
Butalbital compound tablet 1.04 USD tablet
Patents Not Available
Properties
State solid
Melting point 138-139 oC
Experimental Properties
Property Value Source
water solubility 1700 mg/L PhysProp
logP 1.7 PhysProp
Predicted Properties
Property Value Source
water solubility 2.23e+00 g/l ALOGPS
logP 1.47 ALOGPS
logP 1.59 ChemAxon Molconvert
logS -2.00 ALOGPS
pKa 12.15 ChemAxon Molconvert
hydrogen acceptor count 3 ChemAxon Molconvert
hydrogen donor count 2 ChemAxon Molconvert
polar surface area 75.27 ChemAxon Molconvert
rotatable bond count 4 ChemAxon Molconvert
refractivity 58.05 ChemAxon Molconvert
polarizability 22.42 ChemAxon Molconvert
References
Synthesis Reference Not Available
General Reference Not Available
External Links
Resource Link
PubChem Compound 2481 Link_out
PubChem Substance 46505876 Link_out
ChemSpider 2387 Link_out
ChEBI 102524 Link_out
ChEMBL 102524 Link_out
Therapeutic Targets Database DAP000668 Link_out
PharmGKB PA448695 Link_out
Drug Product Database 0 Link_out
RxList http://www.rxlist.com/cgi/generic/esgic.htm Link_out
Wikipedia http://en.wikipedia.org/wiki/Butalbital Link_out
ATC Codes Not Available
AHFS Codes Not Available
PDB Entries Not Available
FDA label Not Available
MSDS Not Available
Interactions
Drug Interactions Not Available
Food Interactions Not Available
Targets

1. Gamma-aminobutyric-acid receptor subunit alpha-1

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: P14867 Link_out
Gene: GABRA1 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Whiting PJ: The GABAA receptor gene family: new opportunities for drug development. Curr Opin Drug Discov Devel. 2003 Sep;6(5):648-57. Pubmed
  2. Mehta AK, Ticku MK: An update on GABAA receptors. Brain Res Brain Res Rev. 1999 Apr;29(2-3):196-217. Pubmed
  3. Krasowski MD, Harrison NL: General anaesthetic actions on ligand-gated ion channels. Cell Mol Life Sci. 1999 Aug 15;55(10):1278-303. Pubmed
  4. Yamakura T, Bertaccini E, Trudell JR, Harris RA: Anesthetics and ion channels: molecular models and sites of action. Annu Rev Pharmacol Toxicol. 2001;41:23-51. Pubmed
  5. Cutrer FM, Mitsikostas DD, Ayata G, Sanchez del Rio M: Attenuation by butalbital of capsaicin-induced c-fos-like immunoreactivity in trigeminal nucleus caudalis. Headache. 1999 Nov-Dec;39(10):697-704. Pubmed
  6. Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. Pubmed
  7. Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. Pubmed
  8. Imming P, Sinning C, Meyer A: Drugs, their targets and the nature and number of drug targets. Nat Rev Drug Discov. 2006 Oct;5(10):821-34. Pubmed

2. Gamma-aminobutyric-acid receptor subunit alpha-2

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: P47869 Link_out
Gene: GABRA2 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Yamakura T, Bertaccini E, Trudell JR, Harris RA: Anesthetics and ion channels: molecular models and sites of action. Annu Rev Pharmacol Toxicol. 2001;41:23-51. Pubmed
  2. Mehta AK, Ticku MK: An update on GABAA receptors. Brain Res Brain Res Rev. 1999 Apr;29(2-3):196-217. Pubmed

3. Gamma-aminobutyric-acid receptor subunit alpha-3

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: P34903 Link_out
Gene: GABRA3 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Yamakura T, Bertaccini E, Trudell JR, Harris RA: Anesthetics and ion channels: molecular models and sites of action. Annu Rev Pharmacol Toxicol. 2001;41:23-51. Pubmed
  2. Mehta AK, Ticku MK: An update on GABAA receptors. Brain Res Brain Res Rev. 1999 Apr;29(2-3):196-217. Pubmed

4. Gamma-aminobutyric-acid receptor subunit alpha-4

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: P48169 Link_out
Gene: GABRA4 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Mehta AK, Ticku MK: An update on GABAA receptors. Brain Res Brain Res Rev. 1999 Apr;29(2-3):196-217. Pubmed

5. Gamma-aminobutyric-acid receptor subunit alpha-5

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: P31644 Link_out
Gene: GABRA5 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Yamakura T, Bertaccini E, Trudell JR, Harris RA: Anesthetics and ion channels: molecular models and sites of action. Annu Rev Pharmacol Toxicol. 2001;41:23-51. Pubmed
  2. Mehta AK, Ticku MK: An update on GABAA receptors. Brain Res Brain Res Rev. 1999 Apr;29(2-3):196-217. Pubmed

6. Gamma-aminobutyric-acid receptor subunit alpha-6

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: Q16445 Link_out
Gene: GABRA6 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Mehta AK, Ticku MK: An update on GABAA receptors. Brain Res Brain Res Rev. 1999 Apr;29(2-3):196-217. Pubmed
  2. Yamakura T, Bertaccini E, Trudell JR, Harris RA: Anesthetics and ion channels: molecular models and sites of action. Annu Rev Pharmacol Toxicol. 2001;41:23-51. Pubmed

7. Neuronal acetylcholine receptor subunit alpha-4

Pharmacological action: unknown
Actions: antagonist

After binding acetylcholine, the AChR responds by an extensive change in conformation that affects all subunits and leads to opening of an ion-conducting channel across the plasma membrane

Organism class: human
UniProt ID: P43681 Link_out
Gene: CHRNA4 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Yamakura T, Bertaccini E, Trudell JR, Harris RA: Anesthetics and ion channels: molecular models and sites of action. Annu Rev Pharmacol Toxicol. 2001;41:23-51. Pubmed
  2. Arias HR, Bhumireddy P: Anesthetics as chemical tools to study the structure and function of nicotinic acetylcholine receptors. Curr Protein Pept Sci. 2005 Oct;6(5):451-72. Pubmed
  3. Krasowski MD, Harrison NL: General anaesthetic actions on ligand-gated ion channels. Cell Mol Life Sci. 1999 Aug 15;55(10):1278-303. Pubmed

8. Neuronal acetylcholine receptor subunit alpha-7

Pharmacological action: unknown
Actions: antagonist

After binding acetylcholine, the AChR responds by an extensive change in conformation that affects all subunits and leads to opening of an ion-conducting channel across the plasma membrane

Organism class: human
UniProt ID: P36544 Link_out
Gene: CHRNA7 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Yamakura T, Bertaccini E, Trudell JR, Harris RA: Anesthetics and ion channels: molecular models and sites of action. Annu Rev Pharmacol Toxicol. 2001;41:23-51. Pubmed
  2. Arias HR, Bhumireddy P: Anesthetics as chemical tools to study the structure and function of nicotinic acetylcholine receptors. Curr Protein Pept Sci. 2005 Oct;6(5):451-72. Pubmed
  3. Krasowski MD, Harrison NL: General anaesthetic actions on ligand-gated ion channels. Cell Mol Life Sci. 1999 Aug 15;55(10):1278-303. Pubmed

9. Glutamate receptor 2

Pharmacological action: unknown
Actions: antagonist

Receptor for glutamate. L-glutamate acts as an excitatory neurotransmitter at many synapses in the central nervous system. The postsynaptic actions of Glu are mediated by a variety of receptors that are named according to their selective agonists. This receptor binds AMPA(quisqualate) > glutamate > kainate

Organism class: human
UniProt ID: P42262 Link_out
Gene: GRIA2 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Yamakura T, Bertaccini E, Trudell JR, Harris RA: Anesthetics and ion channels: molecular models and sites of action. Annu Rev Pharmacol Toxicol. 2001;41:23-51. Pubmed
  2. Krasowski MD, Harrison NL: General anaesthetic actions on ligand-gated ion channels. Cell Mol Life Sci. 1999 Aug 15;55(10):1278-303. Pubmed

10. Glutamate receptor, ionotropic kainate 2

Pharmacological action: unknown
Actions: antagonist

L-glutamate acts as an excitatory neurotransmitter at many synapses in the central nervous system. The postsynaptic actions of Glu are mediated by a variety of receptors that are named according to their selective agonists. May be involved in the transmission of light information from the retina to the hypothalamus. This receptor binds domoate > kainate > quisqualate > 6-cyano-7-nitroquinoxaline-2,3-dione > L-glutamate = 6,7- dinitroquinoxaline-2,3-dione > dihydrokainate

Organism class: human
UniProt ID: Q13002 Link_out
Gene: GRIK2 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Yamakura T, Bertaccini E, Trudell JR, Harris RA: Anesthetics and ion channels: molecular models and sites of action. Annu Rev Pharmacol Toxicol. 2001;41:23-51. Pubmed
  2. Krasowski MD, Harrison NL: General anaesthetic actions on ligand-gated ion channels. Cell Mol Life Sci. 1999 Aug 15;55(10):1278-303. Pubmed
Comments
Drug created on June 13, 2005 07:24 / Updated on April 19, 2011 15:02

This project is supported by Genome Alberta & Genome Canada, a not-for-profit organization that is leading Canada's national genomics strategy with $600 million in funding from the federal government. This project is also supported in part by GenomeQuest, Inc., an enterprise genomic information company serving the life science community.