计算溶液所需的质量、体积或浓度。
,适用于对基线干扰要求严格的色谱和分析工作流程。
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在色谱分析、有机合成和交叉偶联反应领域已被 1 篇同行评审文献引用。
Fexofenadine is a third-generation antihistamine pharmaceutical drμg used in the treatment of allergy symptoms, such as hay fever, nasal congestion, and urticaria.
Information
Fexofenadine (MDL 16455A) inhibitshistamine H1receptor withIC50of 246 nM.
In vitro
Fexofenadine exhibits a potent and concentration-dependent anti-anaphylactic activity with an IC50 value of 95.5nM. Fexofenadine shows only a weak competitive antagonist behaviour for the 5-HT2A receptorsfrom rat caudal artery with pA2 of 5.2. All four P-gp inhibitors has a strong, concentration-dependent effect on the Papp of fexofenadine in both directions in the Caco-2 cell model. The IC50 of verapamil is 8.44 mM on the P-gp-mediated secretion of Fexofenadine. Fexofenadine causes a significant increase in the QT and Tp-e intervals and receives a significant TdP score at doses greater than 100 fold its free TPC in the rabbit left ventricular wedge preparation.
In vivo
Fexofenadine is excreted unchanged in the urine, bile, and gastrointestinal tract, indicating minimal metabolism in rats, making it an ideal probe to study transport processes. Coadministration of Fexofenadine with Ketoconazole increases the oral exposure of Fexofenadine by 187% in rats. In contrast, coadministration of Fexofenadine with orange juice or apple juice to rats decreases the oral exposure of Fexofenadine by 31% and 22%, respectively. Increasing the quantity of orange or apple juice administered further decreases the oral exposure of Fexofenadine, by 40% and 28%, respectively. Biliary excretion clearance of Fexofenadine (17 ml/min/kg) accounts for almost 60% of the total body clearance (30 ml/min/kg) in mice. Knockout mice of Mdr1a/1b P-gp does not affect the biliary excretion clearance with regard to both plasma and liver concentrations, whereas the absence of P-gp causes a 6-fold increase in the plasma concentration and 3-fold higher brain-to-plasma concentration ratio after oral administration.
Cell Data
cell lines:
Concentrations:
Incubation Time:
Powder Purity:≥99%
H315: 引起皮肤刺激
H319: 引起严重眼睛刺激
H302: 吞食有害
H317: 可能引起皮肤过敏反应
H312: 皮肤接触有害
H360: 可能损害生育力或未出生的孩子
P261: 避免吸入灰尘/烟雾/气体/雾/蒸汽/喷雾
P305+P351+P338: 如进入眼睛:用水小心冲洗几分钟。如戴隐形眼镜并可方便地取出,取出隐形眼镜。继续冲洗。
P280: 戴防护手套/穿防护服/戴防护眼罩/戴防护面具。
P302+P352: 如皮肤沾染:用水充分清洗。
P321: 特殊处理(请参阅此标签上的...)。
P405: 密闭存放
P501: 将内容物/容器处理到。。。
P264: 处理后要彻底洗手。
P270: 使用本产品时,请勿进食、饮水或吸烟。
P272: 被污染的工作服不允许离开工作场所
P333+P313: 如发生皮肤刺激或皮疹:求医/就诊。
P362+P364: 脱掉沾污的衣服,清洗后方可重新使用。
P330: 漱口
P203: 使用前,获取、阅读并遵守所有安全说明。
P264+P265: 处理后彻底洗手[和…]。不要触摸眼睛。
P301+P317: 如果被吞咽:请寻求医疗帮助。
P318: 如果暴露或担心,请就医。
P317: 寻求紧急医疗救助。
P337+P317: 如果眼睛刺激持续:寻求医疗帮助。
P332+P317: 如果出现皮肤刺激:请寻求医疗帮助。