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- D54487
- 2025年10月17日
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500mg
| 产品编号 | D54487 |
| 英文名称 | Levofloxacin hydrochloride |
| 中文名称 | 盐酸左氧氟沙星 |
| 理论分子量 | 397.8 |
| 保存条件 | Powder: -20℃ for 3 years | In solvent: -80℃ for 1 year |
| 注意事项 | This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. |
| 背景资料 | Levofloxacin is a broad-spectrum, third-generation fluoroquinolone antibiotic and optically active L-isomer of ofloxacin with antibacterial activity. Levofloxacin diffuses through the bacterial cell wall and acts by inhibiting DNA gyrase (bacterial topoisomerase II), an enzyme required for DNA replication, RNA transcription, and repair of bacterial DNA. Inhibition of DNA gyrase activity leads to blockage of bacterial cell growth. |
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文献和实验Protein Folding Liquid Chromatography
A method for carrying out protein folding with simultaneous separation by protein folding liquid chromatography (PFLC) is described herein. Furthermore, a two-dimensional chromatographic column, termed a 2D column, which can be independently
Purification of Antibodies Using Protein A-Sepharose and FPLC
1. Protein A has been expressed in recombinant form, and its crystal structure has been solved (4 ). The affinity of protein A for Fc regions is very high (K d = 10−7 ). The molecule contains four binding sites, but only two Fc domains can be bound
质疑｜NEJM 疑似误用「尿结晶」图片，医学顶刊也犯低级错误？！
-acetylsulphamethoxazole hydrochloride) 的形式存在，N - 乙酰磺胺甲基异恶唑是磺胺甲基异恶唑的主要代谢物，可在尿液中形成结晶 [2-4]。各种 N - 乙酰磺胺甲基异恶唑结晶形状有很多种（如图 1），包括不对称菱形（A）、蘑菇状（B）、花状（C）、薄矩形（D）、截短菱形（E），厚平行六面体（F）和球体形（G）[5]。 图 1 还有三角形的磺胺甲基异恶唑结晶 [6]，如图 2。图 2左图：三角形磺胺甲基异恶唑晶体；中间图：菱形磺胺甲基异恶唑晶体；右图：偏振光下的三角形磺胺甲基异恶唑。 还有针形的磺胺
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