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Please store the product under the recommended conditions in the Certificate of Analysis.
- 库存:
货期:电询
- 供应商:
MedChemExpress LLC
- CAS号:
3374-05-8
- 规格:
电询
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Nalidixic acid sodium salt
CAS No. : 3374-05-8
MCE 国际站:Nalidixic acid sodium salt
产品活性:Nalidixic acid sodium salt,一种喹诺酮类抗生素 (antibiotic),对革兰氏阳性和革兰氏阴性细菌均有效。Nalidixic acid sodium salt 在较低浓度下以抑菌的方式起作用,而在较高浓度下具有杀菌作用。Nalidixic acid sodium salt 抑制 DNA 促旋酶和拓扑异构酶IV的亚基,并可逆地阻止易感细菌中的 DNA 复制。
研究领域:Anti-infection | Cell Cycle/DNA Damage
作用靶点:Bacterial | Antibiotic | Topoisomerase
In Vitro: Nalidixic acid is against a variety of microorganisms, it is against with Escherichia coli, Pasteurella spp., Klebsiella pneuiiioniae, Aerobacter aeroyenes, Proteus spp., Salmonella spp., Shigella spp. and Brucella spp. with MIC values of 5.0-12.5 μg/ml, 0.5-2.5 μg/ml, 0.8-25.0 μg/ml, 1.0-25.0 μg/ml, 1.25-30.0 μg/ml, 8-3.2 μg/ml, and 7.5-10.0 μg/ml, respectively.
In Vivo: The in vivo activity of Nalidixic acid is most pronounced against Gram-negative bacteria, while Gram-positive organisms are generally more resistant. Maximal activity is observed against systemic infections caused by E. coli, A. aerobacter, Proteus mirabilis, Shigella fkxneri, the ED50 values are 25 mg/kg, 60 mg/kg, 50 mg/kg, and 62 mg/kg, respectively.
The acute toxicity (LD50) of Nalidixic acid in mice following oral and parenteral administration is: oral, 3300 mg/kg; intravenous, 176 mg/kg; and subcutaneous, 500 mg/kg.
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文献和实验抗细菌性合成化合物之一,具有宽广的抗菌谱,特别对革兰氏阴性菌有很强的效力。对动物及人毒性低。已知对细菌具有抑制 DNA合成的特异性。
生理酸性盐(physiologically acid salt)
指植物根系在某种盐溶液中,对其阳离子吸收的量大于阴离子时,造成溶液 pH值下降,则称该盐为生理酸性盐。例如,将植物培养在硫酸钾( K2 SO4 )溶液中,由于植物对钾的需要量大于对硫的需要量,因此,根系吸收 K 量较 SO2- 4 为多。为保持体内电性平衡,根细胞向外界分泌质子( H ),使溶液中 H 增加, pH值下降。这是由于根系生理活动的结果,由此而得名。
Quantification of Abscisic Acid, Cytokinin, and Auxin Content in Salt-Stressed Plant Tissues
Plant hormones cytokinins, auxin (indole-3-acetic acid), and abscisic acid are central to regulation of plant growth and defence to abiotic stresses such as salinity. Quantification of the hormone levels and determination of their ratios
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