Dexmedetomidine hydrochloride
Synonym(s):(+)-Medetomidine hydrochloride;(S)-Medetomidine hydrochloride;4-[(S)-α,2,3-Trimethylbenzyl]imidazole monohydrochloride;5-[(1S)-1-(2,3-Dimethylphenyl)ethyl]-1H-imidazole hydrochloride;Dexmedetomidine hydrochloride
- CAS NO.:145108-58-3
- Empirical Formula: C13H17ClN2
- Molecular Weight: 236.74
- MDL number: MFCD07772269
- EINECS: 682-047-2
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-11-17 16:00:36
What is Dexmedetomidine hydrochloride?
Description
Dexmedetomidine was launched in the US as an i.v. infusion for sedation of initially intubated and mechanically ventilated patients during treatment in an intensive care unit, This imidazole derivative is the (S)-enantiomer of medetomidine that can be obtained via fractional crystallization of the tartrate salt of the racemic mixture. Dexmedetomidine is a full agonist of α2 adrenoceptors with 1300-fold selectivity versus α1 compared to the less selective partial α2 agonist clonidine, a veterinary hypnotic. Dexmedetomidine is unique compared with currently available sedatives in that it provides sedation, analgesia and anxiolysis with the ability of patients to be easily awakened. Besides, it causes minimal respiratory depression unlike other available drugs such as benzodiazepines or opioids. Pharmacological studies in transgenic mice showed that the sedative, anesthetic and analgesic effects of dexmedetomidine are specifically due to the stimulation of the a2A subtype receptor. Like other α2 adrenoceptor agonists, dexmedetomidine can provoke hypotension and bradycardia probably because of its non-selective action on peripheral a2B subtype receptors in vascular smooth muscle. Dexmedetomidine is extensively metabolized into methyl and glucuronide conjugates which are mainly eliminated by renal excretion. It was found to be a CYP2D6 inhibitor but less potent than the clinically relevant standard quinidine.
Physical properties
Dexmedetomidine hydrochloride is a white or almost white powder that is freely soluble in water and has a pKa of 7.1.
Originator
Orion (Finland)
The Uses of Dexmedetomidine hydrochloride
Dexmedetomidine hydrochloride has been used to study its effects on primary neonatal rat cardiomyocytes under hypoxic/reoxygenation conditions. It has also been used to study the effects of dexmedetomidine pretreatment on lipopolysaccharide-induced acute lung injury in mice.
The Uses of Dexmedetomidine hydrochloride
highly selective, potent α2-adrenoceptor agonist, analgesic, anxiolytic, bradycardic, hypotensive, sedative, hypothermic
What are the applications of Application
Dexmedetomidine hydrochloride is an active isomer of medetomide, a potent and highly selective α2-adrenoceptor agonist
Definition
ChEBI: Dexmedetomidine hydrochloride is a medetomidine hydrochloride. It has a role as a sedative. It contains a dexmedetomidine. It is an enantiomer of a levomedetomidine hydrochloride.
brand name
Precedex
Benefits
The chemical name of dexmedetomidine hydrochloride is (S) -4- [1- (2,3- 3,5-dimethylphenyl) ethyl] -1H- imidazole hydrochlorides. Dexmedetomidine hydrochloride has an anti-sympathetic town. The effect of quiet and analgesic, compared with U.S. support pyrimidine, with higher selectivity and a short half-life, can be clinically used for Intensive Care Therapy. Start intubation and calmness using a lung ventilator patient during treatment. Meanwhile, the medicine can also reduce narcotic consumption, improve hand incidence of hemodynamic stability, and reduce myocardial ischaemia in art.
Biological Activity
Active isomer of Medetomide (4-[1-(2,3-Dimethylphenyl)ethyl]-1H-imidazolehydrochloride ), a potent, highly selective α 2 -adrenoceptor agonist (K i values are 1.08 and 1750 nM for α 2 - and α 1 -adrenoceptors respectively). Displays greater selectivity over α 1 -adrenoceptors than clonidine and UK 14,304 (1620-, 220- and 300-fold respectively). Active in vivo ; displays hypotensive, bradycardic, sedative, anxiolytic, hypothermic and analgesic effects.
Biochem/physiol Actions
Dexmedetomidine hydrochloride is a highly potent and selective α2-adrenergic agonist with analgesic and sedative properties, the (+)-isomer of medetomidine. Dexmedetomidine hydrochloride is used clinically as an anesthetic agent to reduce anxiety and tension and promote relaxation and sedation without causing respiratory depression.
Side Effects
Dexmedetomidine hydrochloride may cause serious side effects including: low or high blood pressure,slow heart rate, and abnormal heart rate.
Synthesis
In a 500mL round-bottomed flask, (S)-1 (18.6g, 93mmo1) is dissolved into 50mL dehydrated alcohol, and adding HC1/ ethanolic soln to adjust pH is 2~3, add THF solution 300mL, placement is spent the night, and now adularescent crystallization, filters, crude product is through ethyl acetate/ethyl alcohol recrystallization, filter, infrared drying oven is dried to obtain dexmedetomidine hydrochloride (20.1g, yield 91.5%).
storage
-20°C
Properties of Dexmedetomidine hydrochloride
Melting point: | 156.5-157.5° |
alpha | +52.4° (c = 1 in water) |
Density | 1.17 g/cm3 |
storage temp. | 2-8°C |
solubility | H2O: soluble20mg/mL, clear |
form | powder |
color | white to beige |
optical activity | [α]/D +48 to +58°, c = 1 in H2O |
Merck | 14,2946 |
Stability: | Hygroscopic |
InChI | InChI=1/C13H16N2.ClH/c1-9-5-4-6-12(10(9)2)11(3)13-7-14-8-15-13;/h4-8,11H,1-3H3,(H,14,15);1H/t11-;/s3 |
CAS DataBase Reference | 145108-58-3(CAS DataBase Reference) |
Safety information for Dexmedetomidine hydrochloride
Signal word | Warning |
Pictogram(s) |
Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Dexmedetomidine hydrochloride
InChIKey | VPNGEIHDPSLNMU-MERQFXBCSA-N |
SMILES | [C@@H](C1NC=NC=1)(C1C=CC=C(C)C=1C)C.Cl |&1:0,r| |
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