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Key Documents

T6154

Sigma-Aldrich

Trazodone hydrochloride

≥99% (HPLC), powder

Synonym(s):

2-[3-[4-(3-Chlorophenyl)-1-piperazinyl]propyl]-1,2,4-triazolo[4,3-a]pyridin-3(2H)-one hydrochloride

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About This Item

Empirical Formula (Hill Notation):
C19H22ClN5O · HCl
CAS Number:
Molecular Weight:
408.32
EC Number:
MDL number:
UNSPSC Code:
12352200
PubChem Substance ID:
NACRES:
NA.77

Quality Level

Assay

≥99% (HPLC)

form

powder

solubility

45% (w/v) aq 2-hydroxypropyl-β-cyclodextrin: soluble 23.3 mg/mL
methanol: soluble 25 mg/mL, clear, colorless
0.1 M HCl: soluble 7.4 mg/mL
DMSO: soluble
H2O: soluble, hazy, colorless

originator

Bristol-Myers Squibb

SMILES string

Cl[H].Clc1cccc(c1)N2CCN(CCCN3N=C4C=CC=CN4C3=O)CC2

InChI

1S/C19H22ClN5O.ClH/c20-16-5-3-6-17(15-16)23-13-11-22(12-14-23)8-4-10-25-19(26)24-9-2-1-7-18(24)21-25;/h1-3,5-7,9,15H,4,8,10-14H2;1H

InChI key

OHHDIOKRWWOXMT-UHFFFAOYSA-N

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Biochem/physiol Actions

Antidepressant that potentiates the activity of serotonin uptake blockers and has full 5-HT2C serotonin receptor agonist activity. It is metabolized to the 5-HT1 serotonin receptor agonist 1-(3-Chlorophenyl)piperazine.

Features and Benefits

This compound is featured on the Biogenic Amine Transporters page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.
This compound was developed by Bristol-Myers Squibb. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

Preparation Note

Trazodone hydrochloride dissolves in methanol at 25 mg/ml to yield a clear, colorless solution. It also dissolves in water at 50 mg/ml, with heating to yield a hazy colorless solution. Furthermore, the product is soluble in DMSO or in 0.1 N HCl (7.4 mg/ml). The solubility in a 45% (w/v) aqueous 2-hydroxpropyl-β-cyclodextrin is 23.3 mg/ml. However, it is practically insoluble in other common organic solvents. For HPLC test, the product can be dissolved at 0.25 mg/ml in 50:50 water:methanol (v/v), as this gives better results of dissolution and peak shape than using the product as a 1 mg/ml solution in water.

Pictograms

Health hazardExclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Carc. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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M Marcoli et al.
The Journal of pharmacology and experimental therapeutics, 285(3), 983-986 (1998-06-17)
The effects of trazodone on the cyclic GMP elevation elicited by N-methyl-D-aspartate in rat cerebellar slices were analyzed. Trazodone inhibited in a concentration-dependent manner (EC50 = 0.82 nM) the cyclic GMP response evoked by 0.1 microM N-methyl-D-aspartate. The inhibition was
Letizia Bossini et al.
Expert opinion on pharmacotherapy, 13(12), 1707-1717 (2012-06-21)
Trazodone is an antidepressant belonging to the class of serotonin receptor antagonists and reuptake inhibitors. It is approved by the FDA for the treatment of depression. Insomnia is the most frequent reason for prescription of trazodone. It has also been
Wael Shamseddeen et al.
Journal of child and adolescent psychopharmacology, 22(1), 29-36 (2012-01-19)
In the Treatment of Resistant Depression in Adolescents, study participants who received medication for sleep had a lower response rate. This report sought to clarify this finding. Depressed adolescents who had not responded to a previous adequate serotonin-selective reuptake inhibitor
Jasper Elan Hunt et al.
Frontiers in behavioral neuroscience, 14, 71-71 (2020-06-02)
Many animals, especially those that develop externally, are equipped with innate color preferences that promote survival. For example, Xenopus tadpoles are known to phototax most robustly towards mid-spectrum ("green") wavelengths of light while avoiding shorter ("blue") wavelengths. The innate preference
Khalil El-Chammas et al.
JAMA pediatrics, 167(3), 250-258 (2013-01-30)
OBJECTIVE To assess the effectiveness of prophylactic headache treatment in children and adolescents. DATA SOURCES PubMed, EMBASE, Cochrane Database of Clinical Trials, and bibliography of retrieved articles through August 11, 2012. STUDY SELECTION Randomized trials of headache treatment among children

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