1-Methyl-4-phenyl-4-piperidin-carbons?ure-ethylester-hydrochlorid Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R25:Giftig 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.
S-S?tze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S16:Von Zündquellen fernhalten - Nicht rauchen.
S7:Beh?lter dicht geschlossen halten.
Chemische Eigenschaften
White or almost white, crystalline powder.
Verwenden
Analgesic; sedative; anesthetic.
Controlled substance (opiate).
Definition
An addictive drug,
use by prescription only.
Clinical Use
Meperidine is a μ agonist with approximately one-tenth the potency of morphine after intramuscular
dose. Meperidine produces the analgesia, respiratory depression, and euphoria caused by other μ
opioid agonists, but it causes less constipation and does not inhibit cough. When given orally,
meperidine has 40 to 60% bioavailability because of significant first-pass metabolism. Because of
the limited bioavailability, it is one-third as potent after an oral dose compared to a parenteral
dose.
Meperidine has received extensive use in obstetrics because of its rapid onset and short duration
of action. When it is given intravenously in small (25-mg) doses during delivery, the respiratory
depression in the newborn child is minimized. Meperidine is used as an analgesic
in a variety of nonobstetric anesthetic procedures. Meperidine is extensively metabolized in the
liver, with only 5% of the drug being excreted unchanged. Prolonged dosage of meperidine may
cause an accumulation of the metabolite normeperidine. Normeperidine has only weak analgesic activity, but it causes CNS excitation and can
initiate grand mal seizures. It is recommended that meperidine be discontinued in any patient who
exhibits signs of CNS excitation.
Meperidine has a strong adverse reaction when given to patients receiving a monoamine oxidase
inhibitor. This drug interaction has been seen recently in patients with Parkinson's disease taking
the monoamine oxidase–selective inhibitor selegiline (Eldepryl).
The elimination half-life of meperidine is 3 to 4 hours, and it can double in patients with liver
disease. Acidification of the urine will cause enhanced clearance of meperidine, but there is a
lesser effect on the clearance of the toxic metabolite normeperidine.
Sicherheitsprofil
Poison by ingestion,
subcutaneous, intravenous, and
intraperitoneal routes. Moderately toxic by
parenteral route. Experimental teratogenic
effects. Mutation data reported. An
analgesic. When heated to decomposition it
emits very toxic fumes of HCl and NOx.
1-Methyl-4-phenyl-4-piperidin-carbons?ure-ethylester-hydrochlorid Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
