Niaprazine

Modify Date: 2025-08-25 06:54:05

Niaprazine structure	Common Name	Niaprazine
	CAS Number	27367-90-4	Molecular Weight	356.43700
	Density	N/A	Boiling Point	N/A
	Molecular Formula	C₂₀H₂₅FN₄O	Melting Point	N/A
	MSDS	N/A	Flash Point	N/A

Use of Niaprazine

Niaprazine is a histamine H1-receptor antagonist with marked sedative properties. Niaprazine has antihistamine and antiserotonin activities and can be used for sleep disorder research[1][2].

Name	N-[4-[4-(4-fluorophenyl)piperazin-1-yl]butan-2-yl]pyridine-3-carboxamide
Synonym	More Synonyms

Description	Niaprazine is a histamine H1-receptor antagonist with marked sedative properties. Niaprazine has antihistamine and antiserotonin activities and can be used for sleep disorder research[1][2].
Related Catalog	Signaling Pathways >> Immunology/Inflammation >> Histamine Receptor Research Areas >> Neurological Disease Signaling Pathways >> GPCR/G Protein >> Histamine Receptor
In Vitro	Niaprazine exhibits a low affinity for the vesicular monoamine transporter and for D2, α2, β, H1 and mAch receptors. Niaprazine, particularly the (+)stereoisomer, has a higher affinity for α1 (Ki = 77 nM) and 5-HT2 (Ki = 25 nM) binding sites, but is poorly recognized by 5-HT1A and 5-HT1B binding sites[2].
In Vivo	Niaprazine (60 mg/kg; i.p.; once) treatment increases rat brain 5-hydroxyindole acetic acid (5-HIAA) concentrations 30 min after treatment, and reduced them at 3-8 hr after treatment. Niaprazine also produces a short-lasting depletion of rat brain noradrenaline (NA) and dopamine (DA)[3]. Animal Model: Male Sprague-Dawley rats (150-200 g)[3] Dosage: 60 mg/kg Administration: Intraperitoneal injection; once Result: Increased rat brain 5-hydroxyindole acetic acid (5-HIAA) concentrations 30 min after treatment, and reduced them at 3-8 hr after treatment.
References	[1]. D Scherman, et al. Molecular pharmacology of niaprazine. Prog Neuropsychopharmacol Biol Psychiatry. 1988;12(6):989-1001. [2]. P G Rossi, et al. Niaprazine in the treatment of autistic disorder. J Child Neurol. 1999 Aug;14(8):547-50. [3]. P E Keane, et al. The effect of niaprazine on the turnover of 5-hydroxytryptamine in the rat brain. Neuropharmacology. 1982 Feb;21(2):163-9.

Molecular Formula	C₂₀H₂₅FN₄O
Molecular Weight	356.43700
Exact Mass	356.20100
PSA	51.96000
LogP	3.12900

CHEMICAL IDENTIFICATION

RTECS NUMBER :: QS4476100

CHEMICAL NAME :: Nicotinamide, N-(3-(4-(p-fluorophenyl)-1-piperazinyl)-1-methylpropy l)-

CAS REGISTRY NUMBER :: 27367-90-4

BEILSTEIN REFERENCE NO. :: 0844157

LAST UPDATED :: 199612

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C20-H25-F-N4-O

MOLECULAR WEIGHT :: 356.49

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 890 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: GWXXBX German Offenlegungsschrift Patent Document. (U.S. Patent and Trademark Office, Foreign Patents, Washington, DC 20231) Volume(issue)/page/year: #1957371

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 145 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: GWXXBX German Offenlegungsschrift Patent Document. (U.S. Patent and Trademark Office, Foreign Patents, Washington, DC 20231) Volume(issue)/page/year: #1957371

Hazard Codes	Xi
HS Code	2933599090

HS Code	2933599090
Summary	2933599090. other compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Nopron

EINECS 248-431-5

1709 CERM

Niaprazine

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Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Niaprazine
Price: Check
Purity: 98.0%
Delivery: 10 Day
Contact: Yang
Email: sales@echemcloud.com

DC Chemicals Limited
China
Product Name: Niaprazine
Price: $Inquiry/250mg $Inquiry/100mg $Inquiry/1g
Purity: 98.0%
Delivery: 3 Day
Contact: Tony Cao
Email: sales@dcchemicals.com

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Niaprazine

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The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.