Moxifloxacin is a fourth-generation synthetic fluoroquinolone antibacterial agent. Its antibacterial spectrum includes enteric Gram-(−) rods (Escherichia coli, Proteus species, Klebsiella species), Haemophilus influenzae, atypical bacteria (Mycoplasma, Chlamydia, Legionella), and Streptococcus pneumoniae, and anaerobic bacteria. It differs from earlier antibacterials of the fluoroquinolone class such as levofloxacin and ciprofloxacin in having greater activity against Gram-positive bacteria and anaerobes. Because of its potent activity against the common respiratory pathogen Streptococcus pneumoniae, it is considered a "respiratory quinolone."
CAS Number: 186826-86-8
Molecular Weight: 437.89
Related CAS Number:
354812-41-2 (Moxifloxacin (free base))
Chemical Name: 7-[(4aS, 7aS)-1, 2, 3, 4, 4a, 5, 7, 7a-octahydropyrrolo[3, 4-b]pyridin-6-yl]-1-cyclopropyl-6-fluoro-8-methoxy-4-oxoquinoline-3-carboxylic acid hydrochloride
Appearance: Solid Power
Purity: ≥98% (or refer to the Certificate of Analysis)
Solubility: DMSO 87 mg/mL (198.68 mM) Water 60 mg/mL (137.02 mM)
Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis
Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.
Shelf Life: ≥12 months if stored properly.
Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.
Drug Formulation: To be determined
HS Tariff Code: 382200
How to use
Moxiﬂoxacin exerts its effects by trapping a DNA drug enzyme complex and speciﬁcally inhibiting ATP-dependent enzymes topoisomerase II (DNA gyrase) and topoisomerase IV. Moxiﬂoxacin shows in-vitro potency against M. tuberculosis H37Rv with MIC of 0.177 μg/mL. Moxiﬂoxacin has broad Grampositive and Gram-negative activity. Moxiﬂoxacin shows in vitro and clinical efﬁcacy against Staphylococcus aureus, Streptococcus pneumoniae, Str. pyogenes, Haemophilus inﬂuenzae, H. parainﬂuenzae, Klebsiella pneumoniae, Moraxella catarrhalis, Chlamydia pneumoniae and Mycoplasma pneumoniae. Moxiﬂoxacin has activity against mycobacteria in addition to M. tuberculosis; Moxiﬂoxacin is more active against M. kansasii than M. avium complex: speciﬁcally MIC90 for M. avium > M. intracellulare > M. kansasii at 4, 2 and 2 μg/mL, respectively. MIC90 for M. chelonae > M. fortuitum at 16 and 0.5 μg/mL, respectively.
Moxiﬂoxacin combined with RIF/pyrazinamide (PZA) reduces treatment time by up to 2 months compared to regimens with isoniazid (INH)/RIF/PZA in a mouse model designed to mimic human disease. Similar results with a stable cure are reached after 4 months in mice treated twice weekly with RIF/Moxiﬂoxacin/PZA compared to cure in 6 months when daily treated with RIF/INH/PZA. 100 mg/kg Moxiﬂoxacin in mice gives activity comparable to INH; increased dose in mice to 400 mg/kg Moxiﬂoxacin daily results in spleen CFU counts lower than for INH 25 mg/kg although the differences are not statistically signiﬁcant. AUC/MIC ratio correlates best with in-vivo efﬁcacy for the ﬂuoroquinolones in a mouse model of tuberculosis.
- Tuberculosis (Edinb), 2008, 88(2):127-131.
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