7-Chlor-1,3-dihydro-1-methyl-5-phenyl-2H-1,4-benzodiazepin-2-on Chemische Eigenschaften,Einsatz,Produktion Methoden
R-Sätze Betriebsanweisung:
R21/22:Gesundheitsschädlich bei Berührung mit der Haut und beim Verschlucken.
R39/23/24/25:Giftig: ernste Gefahr irreversiblen Schadens durch Einatmen, Berührung mit der Haut und durch Verschlucken.
R23/24/25:Giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
R11:Leichtentzündlich.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
Chemische Eigenschaften
Light Yellow Crystalline Solid
Verwenden
Anxiolitic; muscle relaxant (skeletal); anticonvulsant.
Controlled substance (depressant)
Allgemeine Beschreibung
Off-white to yellow crystalline powder. Practically odorless. Tasteless at first with a bitter aftertaste.
Air & Water Reaktionen
Hydrolysis occurs in aqueous solutions with a maximum stability around pH 5. . Insoluble in water.
Brandgefahr
Flash point data for Diazapam are not available; however, Diazapam is probably combustible.
Biologische Aktivität
Ligand at the GABA A receptor benzodiazepine modulatory site. Anxiolytic, anticonvulsant and sedative/hypnotic agent.
Pharmakokinetik
The second group of antispastic drugs to be developed were the benzodiazepines, typified by
diazepam. Diazepam exerts its skeletal muscle relaxant effect by binding as an agonist at the
benzodiazepine receptor of the GABAA receptor complex, which enhances GABA potency to increase chloride
conductance. The muscle relaxant properties of classical benzodiazepines,
such as diazepam, appear to be mediated mainly by the GABAA α2 and α3 subunits. The
result is neuronal hyperpolarization, probably at both supraspinal and spinal sites for spasmolytic
activity. Its actions are sufficient to relieve spasticity in patients with lesions affecting the spinal
cord and in some patients with cerebral palsy.
Nebenwirkungen
Few high-quality clinical trials have evaluated
diazepam as a muscle relaxant, but these few suggest that diazepam is no more efficacious than,
for example, carisoprodol, cyclobenzaprine, or tizanidine (i.e., efficacy is marginal).
Moreover, diazepam produces drowsiness and fatigue in most patients at doses required to
significantly reduce muscle tone.
Sicherheitsprofil
Poison by ingestion,
parenteral, subcutaneous, intravenous, and
intraperitoneal routes. Moderately toxic by
skin contact. Questionable carcinogen with
experimental tumorigenic data. Human
systemic effects: dermatitis, effect on
inflammation or mediation of inflammation,
change in cardiac rate, somnolence,
respiratory depression, and other respiratory
changes, visual field changes, diplopia
(double vision), change in motor activity,
muscle contraction or spasticity, ataxia (loss
of muscle coordination), an antipsychotic
and general anesthetic. Human reproductive
effects by ingestion and intravenous routes
causing developmental abnormalities of the
fetal cardiovascular (circulatory) system and
postnatal effects. Experimental teratogenic
and reproductive effects. Human mutation
data reported. An allergen. A drug for the
treatment of anxiety. When heated to
decomposition it emits very toxic fumes of
Cl and NOx.
Stoffwechsel
Diazepam is rapidly and completely absorbed after oral administration. Maximum peak blood concentration occurs in
2 hours, and elimination is slow, with a half-life of approximately 20 to 50 hours. As with chlordiazepoxide, the major
metabolic product of diazepam is N-desmethyldiazepam, which is pharmacologically active and undergoes even
slower metabolism than its parent compound. Repeated administration of diazepam or chlordiazepoxide leads to
accumulation of N-desmethyldiazepam, which can be detected in the blood for more than 1 week after
discontinuation of the drug. Hydroxylation of N-desmethyldiazepam at the 3-position gives the active metabolite
oxazepam.
Versand/Shipping
UN2811 Toxic solids, organic, n.o.s., Hazard
Class: 6.1; Labels: 6.1-Poisonous materials, Technical
Name Required. UN3249 Medicine, solid, toxic, n.o.s.,
Hazard Class: 6.1; Labels: 6.1-Poisonous materials.
7-Chlor-1,3-dihydro-1-methyl-5-phenyl-2H-1,4-benzodiazepin-2-on Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
