niridazole Struktur

1-(5-Nitro-2-thiazolyl)-2-imidazolidinon

Bezeichnung:1-(5-Nitro-2-thiazolyl)-2-imidazolidinon

CAS-Nr61-57-4

Englisch Name:niridazole

CBNumberCB3896840

SummenformelC6H6N4O3S

Molgewicht214.204

MOL-Datei61-57-4.mol

Synonyma

Niridazol

1-(5-Nitro-2-thiazolyl)-2-imidazolidinon

1-(5-Nitro-2-thiazolyl)-2-imidazolidinon physikalisch-chemischer Eigenschaften

Schmelzpunkt	260-262°
Dichte	1.561 (estimate)
Brechungsindex	1.6200 (estimate)
Aggregatzustand	solid
pka	12.73±0.20(Predicted)
Farbe	Yellow crystals from DMF/MeOH
Wasserlöslichkeit	0.13g/L(25 ºC)
IARC	2B (Vol. 13, Sup 7) 1987
EPA chemische Informationen	Niridazole (61-57-4)

Sicherheit

Giftige Stoffe Daten	61-57-4(Hazardous Substances Data)
Toxizität	TDLo orl-rat: 8 g/kg/90W-I:NEO CALEDQ 4,305,78 orl-rat LD50:900 mg/kg FAZMAE 17,108,73

niridazole Chemische Eigenschaften,Einsatz,Produktion Methoden

Beschreibung
Niridazole is a yellow, crystalline solid. It is almost insoluble in water and most organic solvents, but it is soluble in dimethylformamide.
Verwenden
Antischistosomal.
Definition
ChEBI: Niridazole is a C-nitro compound and a member of 1,3-thiazoles.
Indications
Niridazole can be used against blood flukes, especially Schistosoma haematobium. Tolerance and efficacy are reduced in S. mansoni and especially in S. japonicum infections. It is also used in Dracunculus infections. Immunosuppression, vomiting, cramps, dizziness, and headache are among the frequent adverse reactions.
Mechanism of action
Niridazole causes a depletion of glycogen in schistosomes by inducing a reduced rate of conversion of active glycogen phosphorylase to its inactive form. This is achieved through inhibition of the enzyme phosphorylase phosphatase, which normally inactivates glycogen phosphorylase. It is possible that the active moiety is not niridazole, but its 5-imino analog, which can be formed by schistosomes in vitro under anaerobic conditions .
Pharmakologie
Niridazole exhibits schistosomicide and amebicidal action. The mechanism of action is not known. It seems likely that it is concentrated in the parasite organism, which causes inhibition of phosphorylase activation, which is expressed in the depletion of glycogen reserves.
It also may inhibit spermatogenesis of parasites by affecting the production of eggs. It is used for diseases caused by Dracunculus meddinesis, as well as Shistosoma haematobium and Shistosoma mansoni. It belongs to a group of tertiary drugs and is used only in the absence of the drug of choice. Synonyms of this drug are ambilhar and others.
Nebenwirkungen
Occasional adverse reactions are diarrhea, electrocardiographic changes, rash, insomnia, and paresthesia. Psychosis, hemolytic anemia, and convulsions are rare. Contraindications are impaired liver function, glucose-6- phosphatedehydrogenase deficiency, epilepsy, and severe heart diseases.
Sicherheitsprofil
Confirmed carcinogen with experimental carcinogenic and neoplastigenic data. Poison by intraperitoneal route. Moderately toxic by ingestion. Experimental reproductive effects. Human mutation data reported. Used as an amoebicide and schistosomicidal agent.
Synthese
Niridazole, 1-(5-nitro-2-thiazolyl)-2-imidazolidinone (38.1.11), is made by reacting 2-amino-5-nitrothiazol with 2-chloroethylisocyanate to make the disubstituted urea (38.1.10). Heating this compound results in an intramolecular N-alkylation reaction to form the desired imidazolidine derivative, niridazole.

1-(5-Nitro-2-thiazolyl)-2-imidazolidinon Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

61-57-4, niridazole Verwandte Suche:

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