Demoxepam

Modify Date: 2026-07-04 15:40:42

Demoxepam Structure
Demoxepam structure
Common Name Demoxepam
CAS Number 963-39-3 Molecular Weight 286.71300
Density 1.37g/cm3 Boiling Point 447.4ºC at 760mmHg
Molecular Formula C15H11ClN2O2 Melting Point N/A
MSDS N/A Flash Point 224.4ºC
Symbol GHS02 GHS07
GHS02, GHS07
Signal Word Danger

 Use of Demoxepam


Demoxepam is a major metabolite of Chlordiazepoxide. Demoxepam exhibits cytotoxicity activity against cancer cell lines. Demoxepam has anticonvulsant and anxiolytic effects[1][2].

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one
Synonym More Synonyms

 Demoxepam Biological Activity

This table contains bioactivity, target information and biological‑assay experimental data of this compound.

Description Demoxepam is a major metabolite of Chlordiazepoxide. Demoxepam exhibits cytotoxicity activity against cancer cell lines. Demoxepam has anticonvulsant and anxiolytic effects[1][2].
Related Catalog
References

[1]. Moustapha Ouédraogo, et al. In vitro cytotoxicity study of oxaziridines generated after chlordiazepoxide, demoxepam, and desmethylchlordiazepoxide UV irradiation. Drug Chem Toxicol. 2009;32(4):417-23.

[2]. Gregory G Sarris, et al. Demoxepam Derivatization and GC-MS Analysis Produces Erroneous Nordiazepam and Oxazepam Results. J Anal Toxicol. 2019 Jun 1;43(5):406-410.

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.37g/cm3
Boiling Point 447.4ºC at 760mmHg
Molecular Formula C15H11ClN2O2
Molecular Weight 286.71300
Flash Point 224.4ºC
Exact Mass 286.05100
PSA 57.85000
LogP 2.73660
Index of Refraction 1.682
InChIKey PSADRZMLSXCSAS-UHFFFAOYSA-N
SMILES O=C1CN(O)C(c2ccccc2)=c2cc(Cl)ccc2=N1

 Toxicological Information

This table summarizes toxicological test data, acute & chronic toxicity and ecological hazard parameters for this chemical.

CHEMICAL IDENTIFICATION

RTECS NUMBER :
DF1925000
CHEMICAL NAME :
2H-1,4-Benzodiazepin-2-one, 7-chloro-1,3-dihydro-5-phenyl-, 4-oxide
CAS REGISTRY NUMBER :
963-39-3
BEILSTEIN REFERENCE NO. :
0755892
LAST UPDATED :
199612
DATA ITEMS CITED :
5
MOLECULAR FORMULA :
C15-H11-Cl-N2-O2
MOLECULAR WEIGHT :
286.73
WISWESSER LINE NOTATION :
T67 GMV JN IHJ CG JO KR

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
>4 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CTCEA9 Current Therapeutic Research, Clinical & Experimental. (Therapeutic Research Press, Inc., POB 514, Tenafly, NJ 07670) V.1- 1959- Volume(issue)/page/year: 7,590,1965
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1950 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
26RAAN "Benzodinzenines," Garattini, S., et al., New York, Raven Press, 1973 Volume(issue)/page/year: -,39,1973
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
290 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CTCEA9 Current Therapeutic Research, Clinical & Experimental. (Therapeutic Research Press, Inc., POB 514, Tenafly, NJ 07670) V.1- 1959- Volume(issue)/page/year: 7,590,1965
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
>400 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CTCEA9 Current Therapeutic Research, Clinical & Experimental. (Therapeutic Research Press, Inc., POB 514, Tenafly, NJ 07670) V.1- 1959- Volume(issue)/page/year: 7,590,1965
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
628 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CTCEA9 Current Therapeutic Research, Clinical & Experimental. (Therapeutic Research Press, Inc., POB 514, Tenafly, NJ 07670) V.1- 1959- Volume(issue)/page/year: 7,590,1965

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Symbol GHS02 GHS07
GHS02, GHS07
Signal Word Danger
Hazard Statements H225-H302 + H312 + H332-H319
Precautionary Statements P210-P261-P302 + P352 + P312-P304 + P340 + P312-P337 + P313-P403 + P235
RIDADR UN 1648 3 / PGII
HS Code 2933990090

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

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Demoxepam Structure

Demoxepam

CAS#:963-39-3

Detail Learn More
Literature: US6815543 B1, ; Page column 8-10 ;

~%

Demoxepam Structure

Demoxepam

CAS#:963-39-3

Learn More
Literature: Psychopharmacology, , vol. 208, # 4 p. 555 - 562

 Precursor & DownStream

This table lists upstream starting materials and downstream derivative products related to this chemical.

Precursor  2

DownStream  3

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code 2933990090
Summary 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Articles13

More Articles

This table lists relevant public references with title, journal and publication metadata for this compound.

Liquid chromatography of demoxepam and phenothiazines using a post-column photochemical reactor and fluorescence detection.

J. Chromatogr. A. 217 , 463-71, (1981)

Upon irradiation with short-wavelength UV light the tranquillizer demoxepam is converted into a highly fluorescent product. This reaction serves as a sensitive and selective means of detection of low ...

The rapid hydrolysis of chlordiazepoxide to demoxepam may affect the outcome of chronic osmotic minipump studies.

Psychopharmacology 208(4) , 555-62, (2010)

In chronic studies, the classical benzodiazepine chlordiazepoxide (CDP) is often the preferred drug because, unlike other benzodiazepines, it is soluble in water. However, rapid CDP hydrolysis in solu...

Methods for the determination of lorazepam and chlordiazepoxide and metabolites in brain tissue. A comparison with plasma concentrations in the rat.

J. Chromatogr. A. 277 , 201-8, (1983)

Rapid and sensitive methods are described for determining lorazepam and for determining chlordiazepoxide and its metabolites in brain tissue of the rat. Lorazepam was determined by means of solvent ex...

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

7-chloro-5-phenyl-1, 3-dihydro-2H-1, 4-benzodiazpine-2-one-4-oxide
Demoxepam
CHLORDIAZEPOXIDE RELATED COMPOUND A
7-Chloro-5-phenyl-1,5-dihydro-2H-1,4-benzodiazepin-2-one 4-oxide
7-CHLORO-1,3-DIHYDRO-5-PHENYL-2H-1,4-BENZODIAZEPIN-2-ONE-4-OXIDE
Ro 5-2092
Ro 5-2092 lactam
Chlordiazepoxide Related Compound A (25 mg) (7-Chloro-1,3-dihydro-5-phenyl-2H-1,4-benzodiazepin-2-one 4-Oxide)
7-CHLORO-1,3-DIHYDRO-5-PHENYL-2H-1,4-BENZODIAZEPIN-2-ONE 4-OXIDE
7-CHLORO-1,3-DIHYDRO-5-PHENYL-1,4-BENZODIAZEPIN-2-ONE-4-OXID
nordiazepam 4-oxide
7-Chloro-5-phenyl-1,3-dihydro-2H-1,4-benzodiazepine-2-one-4-oxide
7-chloro-1,3-dihydro-5-phenyl-2H-1,4-benzodiazepin-2-one-4-oxide
Chlordiazepoxide lactam
5-phenyl-7-chloro-2,3-dihydro-1H-1,4-benzodiazepin-2-one 4-N-oxide

 Demoxepam | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the LogP of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one?
A: LogP of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one is 2.73660.
Q: What is the boiling point of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one?
A: Boiling point of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one is 447.4ºC at 760mmHg.
Q: What is the CAS number of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one?
A: CAS number of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one is 963-39-3.
Q: What is the polar surface area (PSA) of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one?
A: Polar surface area (PSA) of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one is 57.85000.
Q: What is the molecular formula of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one?
A: Molecular formula of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one is C15H11ClN2O2.
Q: What are the uses of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one?
A: Main uses of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one: Demoxepam is a major metabolite of Chlordiazepoxide. Demoxepam exhibits cytotoxicity activity against cancer cell lines. Demoxepam has anticonvulsant and anxiolytic effects[1][2].
Q: What is the InChIKey of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one?
A: InChIKey of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one is PSADRZMLSXCSAS-UHFFFAOYSA-N.
Q: What are the downstream products of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one?
A: Related downstream products(CAS) of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one: 604-75-1;4797-43-7;60628-57-1.
Q: What is the SMILES notation of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one?
A: SMILES notation of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one is O=C1CN(O)C(c2ccccc2)=c2cc(Cl)ccc2=N1.
Q: What are the upstream materials of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one?
A: Related upstream materials(CAS) of 7-chloro-4-hydroxy-5-phenyl-3H-1,4-benzodiazepin-2-one: 439-14-5;438-41-5.

 Demoxepamfactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
Henan Tianfu Chemical Co., Ltd.
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