Ondansetron

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Achtung

• Gefahrenhinweise

  H301：Giftig bei Verschlucken.

  H318：Verursacht schwere Augenschäden.

  H410：Sehr giftig für Wasserorganismen mit langfristiger Wirkung.

• Sicherheit

  P264：Nach Gebrauch gründlich waschen.

  P264：Nach Gebrauch gründlich waschen.

  P273：Freisetzung in die Umwelt vermeiden.

  P280：Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.

  P391：Verschüttete Mengen aufnehmen.

Ondansetron Chemische Eigenschaften,Einsatz,Produktion Methoden

• R-Sätze Betriebsanweisung:

  R25:Giftig beim Verschlucken.
  R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.

• S-Sätze Betriebsanweisung:

  S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
  S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
  S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.

• Beschreibung

  Ondansetron (hydrochloride) (CRM) (Item No. 21710) is a certified reference material categorized as an antiemetic. Formulations containing ondansetron have been used to reduce alcohol consumption and mood disturbances in early-onset alcoholics. This product is intended for research and forensic applications.

• Chemische Eigenschaften

  White to yellow crystal

• Originator

  Ondansetron hydrochloride ,Chemo Iberica , Spain

• Verwenden

  antibacterial

• Definition

  ChEBI: Ondansetron is a member of carbazoles.

• Indications

  Ondansetron (Zofran) is potent antagonists of 5-HT3 receptors,which is found peripherally on vagal nerve terminals and centrally in the CTZ. During chemotherapy that induces vomiting, mucosal enterochromaffin cells in the GI tract release serotonin, which stimulates 5-HT3 receptors.

• Manufacturing Process

  Preparation of 3-ethoxalyl-9-methyl-1,2,3,9-tetrahydro-4H-carbozol-4-one 3.0 g (0.13 mole) of sodium metal are portionwise added to a stirred mixture containing 19.93 g (0.1 mole) of 9-methyl-1,2,3,9-tetrahydro-4H-carbazol-4one, 19.0 g (0.13 mole) of diethyl oxalate, 2 g of ethanol and 200 ml of dioxane. The slightly warming reaction mixture is stirred at 40° to 50°C for 4 hours, then 16 g of glacial acetic acid and finally 200 ml of water are added thereto at room temperature. After filtering off the yellow crystalline suspension, the precipitate is washed with water and dried to give the title compound in a yield of 24 g (80.2%), m.p. 118°-120°C
  Preparation of 3-hydroxymethyl-9-methyl-1,2,3,9-tetrahydro-4H-carbazol-4one-3-glyoxylic acid lacton
  After adding 0.1 g of triethylamine to a stirred suspension containing 3.00 g (0.01 mole) of the 3-ethoxalyl-9-methyl-1,2,3,9-tetrahydro-4H-carbazol-4 2512 one, in 20 ml of acetone, 1.13 g (0.015 mole) of formol solution are dropwise added to the mixture. The suspension becomes clear within 1 to 2 minutes and crystals begin to precipitate. After further stirring at 35° to 40°C for one hour, the reaction mixture is cooled down to room temperature, filtered off, the precipitate is washed with 50% acetone and dried to give 2.10 g (74.2%) of the title compound, m.p. 242°-244°C.
  Preparation of ondansetron base (chemically 9-methyl-3-[(2-methyl-1-Himidazol-1-yl)methyl]-1,2,3,9-tetrahidro-4-H-carbazol-4-one)
  A mixture containing 2.83 g (0.01 mole) of 3-hydroxymethyl-9-methyl-2,3,9tetrahydro-4H-carbazol-4-one-3-glyoxylic acid lactone, 15 ml of dioxane, 1.32 g of triethylamine, 1.0 g of ethanol and 1.64 g (0.02 mole) of 2methylimidazole is boiled under reflux while stirring for 5 hours. Thereafter, the reaction mixture is diluted with 45 ml of water and cooled down. The precipitate is filtered off, washed with aqueous dioxane and dried to obtain 2.56 g (87.3%) of the title compound, m.p. 220°-223°C.
  Preparation of 9-methyl-3-[(2-methyl-1-H-imidazol-1-yl)methyl]-1,2,3,9tetrahydro-4H-carbazol-4-one hydrochloride dihydrate The process above described is followed, except that after cooling down the reaction mixture to room temperature after boiling, 20 ml of 37% aqueous hydrochloric acid are added thereto. Then, the precipitate is filtered off, washed with isopropanol and dried to obtain 2.40 g (65.6%) of the title salt, m.p. 178°-180°C. The active agent content of the product was found to be 100.3% based on potentiometric titration with sodium hydroxide solution. The theoretical water content is 9.85% (calculated for C18H19N3OHCl2H2O).The water content measured is 10.03%.

• Trademarks

  Zofran (GlaxoSmithKline).

• Therapeutic Function

  Serotonin antagonist

• Clinical Use

  Ondansetron

• Nebenwirkungen

  This causes vagal afferent discharge, inducing vomiting. In binding to 5-HT3 receptors, ondansetron blocks serotonin stimulation, hence vomiting, after emetogenic stimuli such as cisplatin. Headache is the most frequently reported adverse effect of these medications.

• Sicherheitsprofil

  A poison by intravenous route.Human systemic effects by intravenous route: jaundice.When heated to decomposition it emits toxic vapors ofNOx.

• Veterinary Drugs and Treatments

  Used as an antiemetic when conventional antiemetics are ineffective, such as when administering cisplatin or for other causes of intractable vomiting. The use of ondansetron in cats is somewhat controversial and some state it should not be used in this species.

• Arzneimittelwechselwirkung

  Potentially hazardous interactions with other drugs
  Cytotoxics: possible increased risk of ventricular arrhythmias with panobinostat and vandetanib.
  Dopaminergics: possible increased risk of hypotension with apomorphine - avoid.

• Stoffwechsel

  Ondansetron is metabolised in the liver through multiple enzymatic pathways; it is a substrate for cytochrome P450 isoenzymes, primarily CYP3A4, but also CYP1A2 and CYP2D6. The metabolites do not contribute to the pharmacological activity of ondansetron. Less than 5% of a dose is excreted unchanged in the urine

Ondansetron Upstream-Materialien And Downstream Produkte

Ondansetron Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global(299)Suppliers

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