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28266

Sigma-Aldrich

Levofloxacin

98.0-102.0% anhydrous basis (HPLC)

同義詞:

(−)-Ofloxacin

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About This Item

經驗公式（希爾表示法）:
C18H20FN3O4
CAS號碼:
100986-85-4
分子量：:
361.37
Beilstein:
7327015
MDL號碼:
MFCD00865049
分類程式碼代碼:
51102829
PubChem物質ID:
57648297
NACRES:
NA.85
暫時無法取得訂價和供貨情況

生物源

synthetic

品質等級

200

化驗

98.0-102.0% anhydrous basis (HPLC)

形狀

powder or crystals

顏色

light yellow-white to yellow-white

抗生素活性譜

Gram-negative bacteria
Gram-positive bacteria

作用方式

enzyme | inhibits

SMILES 字串

OC(C(C1=O)=CN2C(C1=CC(F)=C3N4CCN(C)CC4)=C3OC[C@@H]2C)=O

InChI

1S/C18H20FN3O4/c1-10-9-26-17-14-11(16(23)12(18(24)25)8-22(10)14)7-13(19)15(17)21-5-3-20(2)4-6-21/h7-8,10H,3-6,9H2,1-2H3,(H,24,25)/t10-/m0/s1

InChI 密鑰

GSDSWSVVBLHKDQ-JTQLQIEISA-N

基因資訊

human ... KCNH1(3756)

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相關類別

應用

Levofloxacin is a broad-spectrum antibiotic used in pharmacokinetic [1], antibiotic resistance [2] , and resistance prevention [3]studies. Antibiotic against bacterial respiratory tract infections.[4][5]

生化／生理作用

Levofloxacin is active against Gram-positive and Gram-negative bacteria. It inhibits DNA gyrase (type II topoisomerase) and topoisomerase IV, [6] thereby inhibiting cell division.

包裝

10mg, 1g, 10g

其他說明

Keep container tightly closed in a dry and well-ventilated place. Keep in a dry place.

象形圖

Health hazardExclamation mark
GHS08,GHS07

訊號詞

Danger

危險聲明

H302,H317,H334

危險分類

Acute Tox. 4 Oral - Resp. Sens. 1A - Skin Sens. 1A

儲存類別代碼

11 - Combustible Solids

水污染物質分類（WGK）

WGK 3

閃點（°F）

Not applicable

閃點（°C）

Not applicable

個人防護裝備

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

從最近期的版本中選擇一個：

分析證明 (COA)

Lot/Batch Number
0000417206
0000417206
0000381693
0000340342
0000381693

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George G Zhanel et al.
Drugs, 62(1), 13-59 (2002-01-16)
The new fluoroquinolones (clinafloxacin, gatifloxacin, gemifloxacin, grepafloxacin, levofloxacin, moxifloxacin, sitafloxacin, sparfloxacin and trovafloxacin) offer excellent activity against Gram-negative bacilli and improved Gram-positive activity (e.g. against Streptococcus pneumoniae and Staphylococcus aureus) over ciprofloxacin. Ciprofloxacin still maintains the best in vitro activity
Miriam Hurst et al.
Drugs, 62(14), 2127-2167 (2002-09-25)
Levofloxacin is the L-form of the fluoroquinolone antibacterial agent, ofloxacin. In in vitro studies, levofloxacin demonstrated a broad range of activity against Gram-positive and -negative organisms and anaerobes. The drug is more active against Gram-positive organisms than ciprofloxacin, but less
Takeshi Hirano et al.
International journal of pharmaceutics, 351(1-2), 113-118 (2007-11-06)
L-Carnitine plays an important role in lipid metabolism by facilitating the transport of long-chain fatty acids across the mitochondrial inner membrane followed by fatty acid beta-oxidation. It is known that members of the OCTN family play an important role in
M H Gotfried et al.
Chest, 119(4), 1114-1122 (2001-04-11)
To determine the steady-state plasma, epithelial lining fluid (ELF), and alveolar macrophage (AM) concentrations of levofloxacin and ciprofloxacin. Multiple-dose, open-label, randomized pharmacokinetic study. Thirty-six healthy, nonsmoking adult subjects were randomized either to oral levofloxacin, 500 or 750 mg once daily
Gregory S Basarab et al.
Scientific reports, 5, 11827-11827 (2015-07-15)
With the diminishing effectiveness of current antibacterial therapies, it is critically important to discover agents that operate by a mechanism that circumvents existing resistance. ETX0914, the first of a new class of antibacterial agent targeted for the treatment of gonorrhea
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文章

抗生素对核酸合成的抑制作用

喹诺酮类药物是一类重要的抗生素，它们通过抑制拓扑异构酶来干扰DNA合成，最常见的是拓扑异构酶II（DNA旋转酶），它是一种参与DNA复制的酶。

Inhibition of Nucleic Acid Synthesis by Antibiotics

Explore how antibiotics, particularly quinolones, inhibit nucleic acid synthesis by targeting topoisomerases, crucial for DNA replication processes.

Questions

1–3 of 3 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  3. Is Levofloxacin 28266 soluble in water?

    1 answer

    1. Levofloxacin is only sparingly soluble in water. It is freely soluble in glacial acetic acid and chloroform.

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