1225-56-5

Basic information

• Product Name: DESMETHYLDOXEPIN
• Synonyms: (3Z)-3-Dibenzo[b,E]oxepin-11(6H)-ylidene-N-methyl-1-propanamine;DESMETHYLDOXEPIN;NORDOXEPIN;1-Propanamine, 3-dibenzb,eoxepin-11(6H)-ylidene-N-methyl-;3-[Dibenz[b,e]oxepin-11(6H)-ylidene]-N-methyl-1-propanamine;N-Methyl-3-[dibenzo[b,e]oxepin-11(6H)-ylidene]-1-propanamine;2887-91-4 (Hydrochloride);Demethyldoxepin
• CAS NO: 1225-56-5
• Molecular Formula: C18H19NO
• Molecular Weight: 265.35
• EINECS: 200-659-6
• Mol File: 1225-56-5.mol
• Article Data: 3

Chemical Properties

• Melting Point: 63-65℃
• Boiling Point: 408.57°C (rough estimate)
• Flash Point: 9℃
• Appearance: /
• Density: 1.0629 (rough estimate)
• Vapor Pressure: 2.74E-07mmHg at 25°C
• Refractive Index: 1.5100 (estimate)
• Storage Temp.: ?20°C
• PKA: pKa 9.75(I=0.00 t=25.0) (Uncertain)
• Water Solubility: 104.8mg/L(25 oC)
• CAS DataBase Reference: DESMETHYLDOXEPIN(CAS DataBase Reference)
• NIST Chemistry Reference: DESMETHYLDOXEPIN(1225-56-5)
• EPA Substance Registry System: DESMETHYLDOXEPIN(1225-56-5)

Safety Data

• Hazard Codes: F,T
• Statements: 11-23/24/25-39/23/24/25
• Safety Statements: 7-16-36/37-45
• RIDADR: UN1230 - class 3 - PG 2 - Methanol, solution
• WGK Germany: 2
• Hazardous Substances Data: 1225-56-5(Hazardous Substances Data)

Usage

Description

Desmethyldoxepin, also known as the primary urinary metabolite of doxepin, is a tricyclic antidepressant used for the treatment of sleep maintenance. It is sold under trade names such as Silenor and Aponal. This analytical reference standard is characterized by its suitability for use in LC/MS or GC/MS methods for urine drug testing, clinical toxicology, and forensic analysis applications.

Uses

Used in Pharmaceutical Analysis:
Desmethyldoxepin is used as an internal standard in the high-performance liquid chromatographic (HPLC) determination of bupivacaine in samples of human serum. This application aids in the accurate measurement and analysis of bupivacaine levels, which is crucial for monitoring patient response to treatment and ensuring therapeutic efficacy.
Used in Urine Drug Testing:
Desmethyldoxepin serves as an analytical reference standard for urine drug testing. It helps in identifying and quantifying the presence of doxepin and its metabolites in urine samples, which is essential for assessing patient compliance with prescribed medication regimens and detecting potential cases of drug abuse.
Used in Clinical Toxicology:
In the field of clinical toxicology, desmethyldoxepin is utilized as a reference standard to analyze and interpret the presence of tricyclic antidepressants in biological samples. This is vital for diagnosing cases of poisoning, overdose, or drug interactions, and for guiding appropriate medical interventions.
Used in Forensic Analysis:
Desmethyldoxepin is employed as an analytical reference standard in forensic analysis to detect and quantify the presence of doxepin and its metabolites in biological samples. This information is crucial for investigations involving drug-facilitated crimes, suspicious deaths, or legal disputes related to drug use.

InChI:InChI=1/C18H19NO/c1-19-12-6-10-16-15-8-3-2-7-14(15)13-20-18-11-5-4-9-17(16)18/h2-5,7-11,19H,6,12-13H2,1H3/b16-10+

Upstream product

• 2895-62-7 11-<3-(N-Methyl-N-ethoxycarbonylamino)-propyliden>-6,11-dihydro-dibenzooxepin 
• 4504-87-4 6,11-dihydrodibenz[b,e]oxepin-11-one 
• 4174-83-8 [3-(methylamino)propyl](triphenyl)phosphonium bromide hydrobromide 
• 1229-29-4 doxepin hydrochloride 

Downstream Products

• 2887-91-4 3-(6H-dibenzoxepin-11-ylidene)-N-methylpropylamine hydrochloride 

Related news

Electrophysiological effects of desmethylimipramine and DESMETHYLDOXEPIN (cas 1225-56-5) on canine cardiac Purkinje fibers07/30/2019

Although the tricyclic antidepressant drugs imipramine and doxepin exert similar direct electrophysiological effects on cardiac cells, toxic cardiac arrhythmias and conduction disturbances are much more commonly associated with imipramine than doxepin in clinical use. To ascertain if this discre...detailed

Comparative Assays for Doxepin and DESMETHYLDOXEPIN (cas 1225-56-5) Using High-Performance Liquid Chromatography and High-Performance Thin-Layer Chromatography07/29/2019

□ Two chromatographic methods, high-performance liquid chromatography (HPLC) and high-performance thin-layer chromatography (HPTLC) were compared for sensitivity and reproducibility in the analysis of the tricyclic antidepressant doxepin and its metabolite, desmethyldoxepin, in plasma. The HPLC...detailed

Determination of doxepin and DESMETHYLDOXEPIN (cas 1225-56-5) in human plasma using liquid chromatography–tandem mass spectrometry07/25/2019

A sensitive method for the simultaneous determination of doxepin and its active metabolite desmethyldoxepin in plasma was established, using high-performance liquid chromatographic separation with tandem mass spectrometric detection. The samples were extracted with hexane–isoamyl alcohol, separ...detailed

Relevant articles and documents

N-DESMETHYL-DOXEPIN AND METHODS OF USING THE SAME TO TREAT SLEEP DISORDERS

The invention relates to desmethyldoxepin, isomers of desmethyldoxepin, and pharmaceutically acceptable salts and prodrugs of desmethyldoxepin; compositions containing the same, and the use of any of the aforementioned for the treatment of sleep disorders.