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| Name | Brompheniramine | ||||||||||||||||||||||||||||||||||||
| Accession Number | DB00835 (APRD00832) | ||||||||||||||||||||||||||||||||||||
| Type | small molecule | ||||||||||||||||||||||||||||||||||||
| Groups | approved | ||||||||||||||||||||||||||||||||||||
| Description | Histamine H1 antagonist used in treatment of allergies, rhinitis, and urticaria. [PubChem] |
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| Structure |
Download: MOL | SDF | SMILES | InChI Display: 2D Structure | 3D Structure |
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| CAS number | 86-22-6 | ||||||||||||||||||||||||||||||||||||
| Weight |
Average: 319.239 Monoisotopic: 318.073161265 |
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| Chemical Formula | C16H19BrN2 | ||||||||||||||||||||||||||||||||||||
| InChI Key | InChIKey=ZDIGNSYAACHWNL-UHFFFAOYSA-N | ||||||||||||||||||||||||||||||||||||
| InChI |
InChI=1S/C16H19BrN2/c1-19(2)12-10-15(16-5-3-4-11-18-16)13-6-8-14(17)9-7-13/h3-9,11,15H,10,12H2,1-2H3
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| IUPAC Name |
[3-(4-bromophenyl)-3-(pyridin-2-yl)propyl]dimethylamine
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| SMILES |
CN(C)CCC(C1=CC=C(Br)C=C1)C1=NC=CC=C1
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| Mass Spec | Not Available | ||||||||||||||||||||||||||||||||||||
| Taxonomy | |||||||||||||||||||||||||||||||||||||
| Kingdom | Organic | ||||||||||||||||||||||||||||||||||||
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| Substructures |
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| Pharmacology | |||||||||||||||||||||||||||||||||||||
| Indication | For the treatment of the symptoms of the common cold and allergic rhinitis, such as runny nose, itchy eyes, watery eyes, and sneezing. | ||||||||||||||||||||||||||||||||||||
| Pharmacodynamics | Brompheniramine is an antihistaminergic medication of the propylamine class. It is a first-generation antihistamine. In allergic reactions an allergen interacts with and cross-links surface IgE antibodies on mast cells and basophils. Once the mast cell-antibody-antigen complex is formed, a complex series of events occurs that eventually leads to cell-degranulation and the release of histamine (and other chemical mediators) from the mast cell or basophil. Once released, histamine can react with local or widespread tissues through histamine receptors. Histamine, acting on H1-receptors, produces pruritis, vasodilatation, hypotension, flushing, headache, tachycardia, and bronchoconstriction. Histamine also increases vascular permeability and potentiates pain. Brompheniramine is a histamine H1 antagonist (or more correctly, an inverse histamine agonist) of the alkylamine class. It provides effective, temporary relief of sneezing, watery and itchy eyes, and runny nose due to hay fever and other upper respiratory allergies. | ||||||||||||||||||||||||||||||||||||
| Mechanism of action | Brompheniramine works by acting as an antagonist of the H1 histamine receptors. It also functions as a moderately effective anticholingeric agent, likely an antimuscarinic agent similar to other common antihistamines such as diphenhydramine. Its effects on the cholinergic system may include side-effects such as drowsiness, sedation, dry mouth, dry throat, blurred vision, and increased heart rate. | ||||||||||||||||||||||||||||||||||||
| Absorption | Antihistamines are well absorbed from the gastrointestinal tract after oral administration. | ||||||||||||||||||||||||||||||||||||
| Volume of distribution | Not Available | ||||||||||||||||||||||||||||||||||||
| Protein binding | Not Available | ||||||||||||||||||||||||||||||||||||
| Metabolism |
Hepatic (cytochrome P-450 system), some renal. |
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| Route of elimination | Not Available | ||||||||||||||||||||||||||||||||||||
| Half life | Not Available | ||||||||||||||||||||||||||||||||||||
| Clearance | Not Available | ||||||||||||||||||||||||||||||||||||
| Toxicity | Oral, rat: LD50 = 318 mg/kg. Signs of overdose include fast or irregular heartbeat, mental or mood changes, tightness in the chest, and unusual tiredness or weakness. | ||||||||||||||||||||||||||||||||||||
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| Pathways | Not Available | ||||||||||||||||||||||||||||||||||||
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| Dosage forms | Not Available | ||||||||||||||||||||||||||||||||||||
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| Patents | Not Available | ||||||||||||||||||||||||||||||||||||
| Properties | |||||||||||||||||||||||||||||||||||||
| State | liquid | ||||||||||||||||||||||||||||||||||||
| Melting point | < 25 oC | ||||||||||||||||||||||||||||||||||||
| Experimental Properties |
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| Predicted Properties |
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| Synthesis Reference | Not Available | ||||||||||||||||||||||||||||||||||||
| General Reference | Not Available | ||||||||||||||||||||||||||||||||||||
| External Links |
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| ATC Codes |
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| AHFS Codes | Not Available | ||||||||||||||||||||||||||||||||||||
| PDB Entries | Not Available | ||||||||||||||||||||||||||||||||||||
| FDA label | Not Available | ||||||||||||||||||||||||||||||||||||
| MSDS | show (73.1 KB) | ||||||||||||||||||||||||||||||||||||
| Interactions | |||||||||||||||||||||||||||||||||||||
| Drug Interactions | Not Available | ||||||||||||||||||||||||||||||||||||
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| Targets |
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Pharmacological action: yes
Actions: antagonist In peripheral tissues, the H1 subclass of histamine receptors mediates the contraction of smooth muscles, increase in capillary permeability due to contraction of terminal venules, and catecholamine release from adrenal medulla, as well as mediating neurotransmission in the central nervous system Organism class: humanUniProt ID: P35367 ![]() Gene: HRH1 ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
2. Muscarinic acetylcholine receptor M1 Pharmacological action: unknownActions: antagonist The muscarinic acetylcholine receptor mediates various cellular responses, including inhibition of adenylate cyclase, breakdown of phosphoinositides and modulation of potassium channels through the action of G proteins. Primary transducing effect is Pi turnover Organism class: humanUniProt ID: P11229 ![]() Gene: CHRM1 ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
3. Muscarinic acetylcholine receptor M2 Pharmacological action: unknownActions: antagonist The muscarinic acetylcholine receptor mediates various cellular responses, including inhibition of adenylate cyclase, breakdown of phosphoinositides and modulation of potassium channels through the action of G proteins. Primary transducing effect is adenylate cyclase inhibition Organism class: humanUniProt ID: P08172 ![]() Gene: CHRM2 ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
4. Muscarinic acetylcholine receptor M3 Pharmacological action: unknownActions: antagonist The muscarinic acetylcholine receptor mediates various cellular responses, including inhibition of adenylate cyclase, breakdown of phosphoinositides and modulation of potassium channels through the action of G proteins. Primary transducing effect is Pi turnover Organism class: humanUniProt ID: P20309 ![]() Gene: CHRM3 ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
5. Muscarinic acetylcholine receptor M4 Pharmacological action: unknownActions: antagonist The muscarinic acetylcholine receptor mediates various cellular responses, including inhibition of adenylate cyclase, breakdown of phosphoinositides and modulation of potassium channels through the action of G proteins. Primary transducing effect is inhibition of adenylate cyclase Organism class: humanUniProt ID: P08173 ![]() Gene: CHRM4 ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
6. Muscarinic acetylcholine receptor M5 Pharmacological action: unknownActions: antagonist The muscarinic acetylcholine receptor mediates various cellular responses, including inhibition of adenylate cyclase, breakdown of phosphoinositides and modulation of potassium channels through the action of G proteins. Primary transducing effect is Pi turnover Organism class: humanUniProt ID: P08912 ![]() Gene: CHRM5 ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
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| Enzymes |
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Actions: substrate
Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics UniProt ID: P20813![]() Gene: CYP2B6 ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
Actions: substrate
Responsible for the metabolism of a number of therapeutic agents such as the anticonvulsant drug S-mephenytoin, omeprazole, proguanil, certain barbiturates, diazepam, propranolol, citalopram and imipramine UniProt ID: P33261![]() Gene: CYP2C19 ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
Actions: substrate
Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. In the epoxidation of arachidonic acid it generates only 14,15- and 11,12-cis-epoxyeicosatrienoic acids. It is the principal enzyme responsible for the metabolism the anti- cancer drug paclitaxel (taxol) UniProt ID: P10632![]() Gene: CYP2C8 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
Actions: substrate
Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. This enzyme contributes to the wide pharmacokinetics variability of the metabolism of drugs such as S- warfarin, diclofenac, phenytoin, tolbutamide and losartan UniProt ID: P11712![]() Gene: CYP2C9 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
Actions: substrate, inhibitor
Responsible for the metabolism of many drugs and environmental chemicals that it oxidizes. It is involved in the metabolism of drugs such as antiarrhythmics, adrenoceptor antagonists, and tricyclic antidepressants UniProt ID: P10635![]() Gene: CYP2D6 ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
Actions: substrate
Metabolizes several precarcinogens, drugs, and solvents to reactive metabolites. Inactivates a number of drugs and xenobiotics and also bioactivates many xenobiotic substrates to their hepatotoxic or carcinogenic forms UniProt ID: P05181![]() Gene: CYP2E1 ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
Actions: substrate
Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It performs a variety of oxidation reactions (e.g. caffeine 8-oxidation, omeprazole sulphoxidation, midazolam 1'-hydroxylation and midazolam 4- hydroxylation) of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. The enzyme also hydroxylates etoposide UniProt ID: P08684![]() Gene: CYP3A4 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
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| Comments |
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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.