Halazepam

Halazepam

Systematic (IUPAC) name
7-chloro-5-phenyl-1-(2,2,2-trifluoroethyl)-3H-1,4-benzodiazepin-2-one
Clinical data
AHFS/Drugs.com	Micromedex Detailed Consumer Information
MedlinePlus	a684001
Pregnancy category	?
Legal status	DE: Anlage III (Prescription only) US: Schedule IV
Routes of administration	Oral
Pharmacokinetic data
Metabolism	Hepatic
Biological half-life	14 hours (halazepam), 50–100 hours (metabolites).
Excretion	Renal
Identifiers
CAS Number	23092-17-3 Y
ATC code	N05BA13 (WHO)
PubChem	CID: 31640
IUPHAR/BPS	7195
DrugBank	DB00801 Y
ChemSpider	29343 Y
UNII	320YC168LF Y
KEGG	D00338 Y
ChEMBL	CHEMBL970 Y
Synonyms	9-chloro-6-phenyl-2-(2,2,2-trifluoroethyl)-2,5-diazabicyclo[5.4.0]undeca-5,8,10,12-tetraen-3-one
Chemical data
Formula	C17H12ClF3N2O
Molecular mass	352.7 g/mol
SMILES FC(F)(CN1C(CN=C(C2=CC=CC=C2)C3=C1C=CC(Cl)=C3)=O)F
InChI InChI=1S/C17H12ClF3N2O/c18-12-6-7-14-13(8-12)16(11-4-2-1-3-5-11)22-9-15(24)23(14)10-17(19,20)21/h1-8H,9-10H2 Y Key:WYCLKVQLVUQKNZ-UHFFFAOYSA-N Y
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Halazepam is a benzodiazepine derivative that was marketed under the brand names Paxipam in the United States, Alapryl in Spain, and Pacinone in Portugal.

Medical uses

Halazepam was used for the treatment of anxiety.

Adverse effects

Adverse effects include drowsiness, confusion, dizziness, and sedation. Gastrointestinal side effects have also been reported including dry mouth and nausea.

Pharmacokinetics and pharmacodynamics

Pharmacokinetics and pharmacodynamics were listed in Current Psychotherapeutic Drugs published in June 15, 1998 as follows:

Onset of action	Intermediate to slow
Plasma half life	14 hr for parent drug and 30-100 hr for its metabolite
Peak plasma levels	1-3 hr for parent drug and 3-6 hf for its metabolite
Metabolism	Metabolized into desmethyldiazepam and 3-hydroxyhalazepam (in the liver)
Excretion	Excreted through kidneys
Protein binding	98% bound to plasma protein

Regulatory Information

Halazepam is classified as a schedule 4 controlled substance with a corresponding code 2762 by the Drug Enforcement Administration (DEA).

Commercial production

Halazepam was invented by Schlesinger Walter in the U.S. It was marketed as an anti-anxiety agent in 1981. However, Halazepam is not commercially available in the United States because it was withdrawn by its manufacturer for poor sales.

See also

• Benzodiazepines
• Nordazepam
• Diazepam
• Chlordiazepoxide
• Quazepam, fletazepam, triflubazam — benzodiazepines with trifluoromethyl group attached

External links

• Inchem - Halazepam