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Merck
CN

28266

Levofloxacin

98.0-102.0% anhydrous basis (HPLC)

Synonym(s):

Levofloxacin Anhydrous, (−)-Ofloxacin

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About This Item

Empirical Formula (Hill Notation):
C18H20FN3O4
CAS Number:
100986-85-4
Molecular Weight:
361.37
UNSPSC Code:
51102829
NACRES:
NA.85
PubChem Substance ID:
57648297
MDL number:
MFCD00865049
Beilstein/REAXYS Number:
7327015

Key Documents

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Product Name

Levofloxacin, 98.0-102.0% anhydrous basis (HPLC)

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

SMILES string

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

InChI key

GSDSWSVVBLHKDQ-JTQLQIEISA-N

biological source

synthetic

assay

98.0-102.0% anhydrous basis (HPLC)

form

powder or crystals

color

light yellow-white to yellow-white

antibiotic activity spectrum

Gram-negative bacteria
Gram-positive bacteria

mode of action

enzyme | inhibits

Quality Level

200

Gene Information

human ... KCNH1(3756)

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Application

Levofloxacin is a broad-spectrum antibiotic used in pharmacokinetic , antibiotic resistance , and resistance prevention studies. Antibiotic against bacterial respiratory tract infections.

Biochem/physiol Actions

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

Other Notes

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

Packaging

10mg, 1g, 10g

pictograms

Health hazardExclamation mark
GHS08,GHS07

signalword

Danger

Hazard Classifications

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

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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

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Certificates of Analysis (COA)

Lot/Batch Number
0000488861
0000488861
0000417206
0000417206
0000381693

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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
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
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
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
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Inhibition of Nucleic Acid Synthesis by Antibiotics

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

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。

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