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Details

Stereochemistry RACEMIC
Molecular Formula 2C19H22FN3O4.H2O
Molecular Weight 768.8034
Optical Activity ( + / - )
Defined Stereocenters 0 / 2
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of GATIFLOXACIN HEMIHYDRATE

SMILES

O.COC1=C(N2CCNC(C)C2)C(F)=CC3=C1N(C=C(C(O)=O)C3=O)C4CC4.COC5=C(N6CCNC(C)C6)C(F)=CC7=C5N(C=C(C(O)=O)C7=O)C8CC8

InChI

InChIKey=ISCAXBHESPTGIQ-UHFFFAOYSA-N
InChI=1S/2C19H22FN3O4.H2O/c2*1-10-8-22(6-5-21-10)16-14(20)7-12-15(18(16)27-2)23(11-3-4-11)9-13(17(12)24)19(25)26;/h2*7,9-11,21H,3-6,8H2,1-2H3,(H,25,26);1H2

HIDE SMILES / InChI

Molecular Formula H2O
Molecular Weight 18.0153
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Molecular Formula C19H22FN3O4
Molecular Weight 375.3941
Charge 0
Count
Stereochemistry RACEMIC
Additional Stereochemistry No
Defined Stereocenters 0 / 1
E/Z Centers 0
Optical Activity ( + / - )

Gatifloxacin is a recently developed antibacterial agent differing from earlier fluoroquinolones by the presence of a methoxy group at the C-8 position. The presence of the methoxy group has conferred improved antibacterial activity against both Gram-positive and Gram-negative organisms, making gatifloxacin a broad-spectrum antimicrobial agent applicable in many clinical settings. Gatifloxacin is sold under the brand Zymar and is indicated for the treatment of bacterial conjunctivitis caused by susceptible strains of the following organisms: Aerobic Gram-Positive Bacteria: Cornyebacterium propinquum, Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus mitis, Streptococcus pneumoniae and Aerobic Gram-Negative Bacteria: Haemophilus influenza. The antibacterial action depends on blocking of bacterial DNA replication by binding itself to an enzyme called DNA gyrase, which allows the untwisting required to replicate one DNA double helix into two. Notably the drug has 100 times higher affinity for bacterial DNA gyrase than for mammalian. In addition, Gatifloxacin inhibits bacterial topoisomerase IV. This enzyme is an enzyme known to play a key role in the partitioning of the chromosomal DNA during bacterial cell division. The mechanism of action of fluoroquinolones including gatifloxacin is different from that of aminoglycoside, macrolide, and tetracycline antibiotics. Therefore, gatifloxacin may be active against pathogens that are resistant to these antibiotics and these antibiotics may be active against pathogens that are resistant to gatifloxacin. There is no cross-resistance between gatifloxacin and the aforementioned classes of antibiotics. Cross-resistance has been observed between systemic gatifloxacin and some other fluoroquinolones.

CNS Activity

Curator's Comment: Known to be CNS penetrant in rats. Human data not available

Approval Year

Targets

Targets

Primary TargetPharmacologyConditionPotency
Conditions

Conditions

ConditionModalityTargetsHighest PhaseProduct
Curative
ZYMAR

Approved Use

ZYMAXID® (gatifloxacin ophthalmic solution) 0.5% solution is indicated for the treatment of bacterial conjunctivitis caused by susceptible strains of the following organisms: Aerobic Gram-Positive Bacteria: Staphylococcus aureus Staphylococcus epidermidis Streptococcus mitis group* Streptococcus oralis * Streptococcus pneumoniae Aerobic Gram-Negative Bacteria: Haemophilus influenzae *Efficacy for this organism was studied in fewer than 10 infections. ZYMAXID® ophthalmic solution is a topical fluoroquinolone anti-infective indicated for the treatment of bacterial conjunctivitis caused by susceptible strains of the following organisms: Haemophilus influenzae, Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus mitis group* , Streptococcus oralis * , Streptococcus pneumoniae *Efficacy for this organism was studied in fewer than 10 infections. (1)

Launch Date

2003
Cmax

Cmax

ValueDoseCo-administeredAnalytePopulation
3.8 μg/mL
400 mg single, oral
dose: 400 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
4.2 μg/mL
400 mg 1 times / day steady-state, oral
dose: 400 mg
route of administration: Oral
experiment type: STEADY-STATE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
4.2 μg/mL
400 mg 1 times / day steady-state, oral
dose: 400 mg
route of administration: Oral
experiment type: STEADY-STATE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: UNHEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
5.5 μg/mL
400 mg single, intravenous
dose: 400 mg
route of administration: Intravenous
experiment type: SINGLE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
4.6 μg/mL
400 mg 1 times / day steady-state, intravenous
dose: 400 mg
route of administration: Intravenous
experiment type: STEADY-STATE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
AUC

AUC

ValueDoseCo-administeredAnalytePopulation
33 μg × h/mL
400 mg single, oral
dose: 400 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
34.4 μg × h/mL
400 mg 1 times / day steady-state, oral
dose: 400 mg
route of administration: Oral
experiment type: STEADY-STATE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
51 μg × h/mL
400 mg 1 times / day steady-state, oral
dose: 400 mg
route of administration: Oral
experiment type: STEADY-STATE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: UNHEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
35.1 μg × h/mL
400 mg single, intravenous
dose: 400 mg
route of administration: Intravenous
experiment type: SINGLE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
35.4 μg × h/mL
400 mg 1 times / day steady-state, intravenous
dose: 400 mg
route of administration: Intravenous
experiment type: STEADY-STATE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
T1/2

T1/2

ValueDoseCo-administeredAnalytePopulation
7.8 h
400 mg single, oral
dose: 400 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
7.1 h
400 mg 1 times / day steady-state, oral
dose: 400 mg
route of administration: Oral
experiment type: STEADY-STATE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
7.4 h
400 mg single, intravenous
dose: 400 mg
route of administration: Intravenous
experiment type: SINGLE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
13.9 h
400 mg 1 times / day steady-state, intravenous
dose: 400 mg
route of administration: Intravenous
experiment type: STEADY-STATE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
Funbound

Funbound

ValueDoseCo-administeredAnalytePopulation
80%
400 mg single, oral
dose: 400 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
80%
400 mg 1 times / day steady-state, oral
dose: 400 mg
route of administration: Oral
experiment type: STEADY-STATE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
80%
400 mg single, intravenous
dose: 400 mg
route of administration: Intravenous
experiment type: SINGLE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
80%
400 mg 1 times / day steady-state, intravenous
dose: 400 mg
route of administration: Intravenous
experiment type: STEADY-STATE
co-administered:
GATIFLOXACIN serum
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
Doses

Doses

DosePopulationAdverse events​
10 mg/kg 1 times / day steady, oral
Recommended
Dose: 10 mg/kg, 1 times / day
Route: oral
Route: steady
Dose: 10 mg/kg, 1 times / day
Sources:
unhealthy, 6 - 48 months
Health Status: unhealthy
Age Group: 6 - 48 months
Sex: M
Sources:
Disc. AE: Vomiting, Diarrhea...
AEs leading to
discontinuation/dose reduction:
Vomiting (15 patients)
Diarrhea (3 patients)
Dehydration (2 patients)
Maculopapular rash (2 patients)
Sources:
400 mg 1 times / day steady, oral
Recommended
Dose: 400 mg, 1 times / day
Route: oral
Route: steady
Dose: 400 mg, 1 times / day
Sources:
unhealthy, 79 years
Health Status: unhealthy
Age Group: 79 years
Sex: M
Sources:
Disc. AE: Hyperglycemia...
AEs leading to
discontinuation/dose reduction:
Hyperglycemia (1 patient)
Sources:
400 mg 1 times / day steady, oral
Recommended
Dose: 400 mg, 1 times / day
Route: oral
Route: steady
Dose: 400 mg, 1 times / day
Sources:
unhealthy, 84 years
Health Status: unhealthy
Age Group: 84 years
Sex: F
Sources:
Disc. AE: Hyperglycemia...
AEs leading to
discontinuation/dose reduction:
Hyperglycemia (1 patient)
Sources:
400 mg 1 times / day steady, oral
Recommended
Dose: 400 mg, 1 times / day
Route: oral
Route: steady
Dose: 400 mg, 1 times / day
Sources:
unhealthy, 86 years
Health Status: unhealthy
Age Group: 86 years
Sex: M
Sources:
Disc. AE: Hyperglycemia...
AEs leading to
discontinuation/dose reduction:
Hyperglycemia (1 patient)
Sources:
AEs

AEs

AESignificanceDosePopulation
Vomiting 15 patients
Disc. AE
10 mg/kg 1 times / day steady, oral
Recommended
Dose: 10 mg/kg, 1 times / day
Route: oral
Route: steady
Dose: 10 mg/kg, 1 times / day
Sources:
unhealthy, 6 - 48 months
Health Status: unhealthy
Age Group: 6 - 48 months
Sex: M
Sources:
Dehydration 2 patients
Disc. AE
10 mg/kg 1 times / day steady, oral
Recommended
Dose: 10 mg/kg, 1 times / day
Route: oral
Route: steady
Dose: 10 mg/kg, 1 times / day
Sources:
unhealthy, 6 - 48 months
Health Status: unhealthy
Age Group: 6 - 48 months
Sex: M
Sources:
Maculopapular rash 2 patients
Disc. AE
10 mg/kg 1 times / day steady, oral
Recommended
Dose: 10 mg/kg, 1 times / day
Route: oral
Route: steady
Dose: 10 mg/kg, 1 times / day
Sources:
unhealthy, 6 - 48 months
Health Status: unhealthy
Age Group: 6 - 48 months
Sex: M
Sources:
Diarrhea 3 patients
Disc. AE
10 mg/kg 1 times / day steady, oral
Recommended
Dose: 10 mg/kg, 1 times / day
Route: oral
Route: steady
Dose: 10 mg/kg, 1 times / day
Sources:
unhealthy, 6 - 48 months
Health Status: unhealthy
Age Group: 6 - 48 months
Sex: M
Sources:
Hyperglycemia 1 patient
Disc. AE
400 mg 1 times / day steady, oral
Recommended
Dose: 400 mg, 1 times / day
Route: oral
Route: steady
Dose: 400 mg, 1 times / day
Sources:
unhealthy, 79 years
Health Status: unhealthy
Age Group: 79 years
Sex: M
Sources:
Hyperglycemia 1 patient
Disc. AE
400 mg 1 times / day steady, oral
Recommended
Dose: 400 mg, 1 times / day
Route: oral
Route: steady
Dose: 400 mg, 1 times / day
Sources:
unhealthy, 84 years
Health Status: unhealthy
Age Group: 84 years
Sex: F
Sources:
Hyperglycemia 1 patient
Disc. AE
400 mg 1 times / day steady, oral
Recommended
Dose: 400 mg, 1 times / day
Route: oral
Route: steady
Dose: 400 mg, 1 times / day
Sources:
unhealthy, 86 years
Health Status: unhealthy
Age Group: 86 years
Sex: M
Sources:
Overview

Overview

OverviewOther

Other InhibitorOther SubstrateOther Inducer







Drug as perpetrator​Drug as victimTox targets

Tox targets

TargetModalityActivityMetaboliteClinical evidence
Sourcing

Sourcing

Vendor/AggregatorIDURL
PubMed

PubMed

TitleDatePubMed
Synthesis of gatifloxacin derivatives and their biological activities against Mycobacterium leprae and Mycobacterium tuberculosis.
2013-02-15
Combined contributions of over-secreted glucagon-like peptide 1 and suppressed insulin secretion to hyperglycemia induced by gatifloxacin in rats.
2013-02-01
Comparative in vitro and in vivo antimicrobial activities of sitafloxacin, gatifloxacin and moxifloxacin against Mycobacterium avium.
2011-04
In vitro antituberculosis activities of ACH-702, a novel isothiazoloquinolone, against quinolone-susceptible and quinolone-resistant isolates.
2010-08
In vitro activities of DC-159a, a novel fluoroquinolone, against Mycobacterium species.
2010-06
Safety profile of the fluoroquinolones: focus on levofloxacin.
2010-05-01
A comparative analysis of chromosomal aberrations in cultured human lymphocytes due to fluoroquinolone drugs at different expression periods.
2010-05
Antituberculosis activity of the molecular libraries screening center network library.
2009-09
Synthesis and in-vitro antimycobacterial evaluation of 1-(cyclopropyl/2,4-difluorophenyl/tert-butyl)-1,4-dihydro- 8-methyl-6-nitro-4-oxo-7-(substituted secondary amino)quinoline-3-carboxylic acids.
2009-02
Antimycobacterial activities of novel fluoroquinolones.
2009-01
Antimycobacterial and phototoxic evaluation of novel 6-fluoro/nitro-4-oxo-7-(sub)-4H-[1,3]thiazeto[3,2-a]quinoline-3-carboxylic acid.
2008-04
Antimycobacterial activities of novel 2-(sub)-3-fluoro/nitro-5,12-dihydro-5-oxobenzothiazolo[3,2-a]quinoline-6-carboxylic acid.
2008-03-15
Synthesis and antimycobacterial evaluation of newer 1-cyclopropyl-1,4-dihydro-6-fluoro-7-(substituted secondary amino)-8-methoxy-5-(sub)-4-oxoquinoline-3-carboxylic acids.
2008-03-01
[A case of multi-drug resistant tuberculosis showing psychiatric adverse effect by cycloserine].
2008-01
Development and validation of an ion-pairing RP-HPLC method for the estimation of gatifloxacin in bulk and formulations.
2007-04
[Status epilepticus and gatifloxacin].
2007-01
Design, synthesis and activity against Toxoplasma gondii, Plasmodium spp., and Mycobacterium tuberculosis of new 6-fluoroquinolones.
2006-12
Rapid microbiologic and pharmacologic evaluation of experimental compounds against Mycobacterium tuberculosis.
2006-04
Serious adverse drug effects--seeing the trees through the forest.
2006-03-30
Outpatient gatifloxacin therapy and dysglycemia in older adults.
2006-03-30
Fluoroquinolones: an important class of antibiotics against tuberculosis.
2006
Antimicrosporidial activity of (fluoro)quinolones in vitro and in vivo.
2005-05
Gatifloxacin-induced cholestatic hepatitis--a challenging diagnosis.
2005-03
Action of fluoroquinolones and Linezolid on logarithmic- and stationary-phase culture of Mycobacterium tuberculosis.
2004-11
Synthesis of new fluoroquinolones and evaluation of their in vitro activity on Toxoplasma gondii and Plasmodium spp.
2004-06-07
Mycobacterium tuberculosis DNA gyrase: interaction with quinolones and correlation with antimycobacterial drug activity.
2004-04
Short-course treatment regimen to identify potential antituberculous agents in a murine model of tuberculosis.
2004-04
Torsades de pointes associated with fluoroquinolones: importance of concomitant risk factors.
2004-03
Mutant prevention concentration: comparison of fluoroquinolones and linezolid with Mycobacterium tuberculosis.
2004-03
Fluoroquinolones as chemotherapeutics against mycobacterial infections.
2004
Gatifloxacin and ethionamide as the foundation for therapy of tuberculosis.
2003-08
Synergic activity of fluoroquinolones and linezolid against Mycobacterium tuberculosis.
2003-04
Rapid in vivo screening of experimental drugs for tuberculosis using gamma interferon gene-disrupted mice.
2003-02
Sterilizing activities of fluoroquinolones against rifampin-tolerant populations of Mycobacterium tuberculosis.
2003-02
In vitro activity of moxifloxacin, levofloxacin, gatifloxacin and linezolid against Mycobacterium tuberculosis.
2002-12
Possible gatifloxacin-induced fulminant hepatic failure.
2002-06-28
In vitro and in vivo activities of gatifloxacin against Mycobacterium tuberculosis.
2002-04
In vitro antibacterial activities of DQ-113, a potent quinolone, against clinical isolates.
2002-03
In vitro activity of 11 antimicrobial agents, including gatifloxacin and GAR936, tested against clinical isolates of Mycobacterium marinum.
2002-02
Antimicrobial activities of clarithromycin, gatifloxacin and sitafloxacin, in combination with various antimycobacterial drugs against extracellular and intramacrophage Mycobacterium avium complex.
2002-02
Gatifloxacin-associated acute hepatitis.
2001-12
Rates of torsades de pointes associated with ciprofloxacin, ofloxacin, levofloxacin, gatifloxacin, and moxifloxacin.
2001-12
Activity of gatifloxacin alone or in combination with pyrimethamine or gamma interferon against Toxoplasma gondii.
2001-01
The activity of the methylpiperazinyl fluoroquinolone CG 5501: a comparison with other fluoroquinolones.
1997-04
N-1-tert-butyl-substituted quinolones: in vitro anti-Mycobacterium avium activities and structure-activity relationship studies.
1996-11
Structure-activity relationships of quinolone agents against mycobacteria: effect of structural modifications at the 8 position.
1996-10
[In vitro anti-MAC activities of new quinolones in focus (2)].
1996-09
[In vitro anti-MAC activities of new quinolones in focus (1)].
1996-09
Comparative antimycobacterial activities of the newly synthesized quinolone AM-1155, sparfloxacin, and ofloxacin.
1993-06
In vitro and in vivo antibacterial activities of AM-1155, a new 6-fluoro-8-methoxy quinolone.
1992-10
Patents

Patents

Sample Use Guides

The recommended dosage regimen for the treatment of bacterial conjunctivitis is: Days 1 and 2: Instill one drop every two hours in the affected eye(s) while awake, up to 8 times daily. Days 3 through 7: Instill one drop up to four times daily while awake.
Route of Administration: Other
Gatifloxacin was synergic with the beta-lactams piperacillin, cefepime and meropenem, and with gentamicin against some drug-resistant pathogens. It was investigated in vitro interaction of gatifloxacin in combination with these drugs against clinical isolates of Stenotrophomonas maltophilia, Pseudomonas aeruginosa, Burkholderia cepacia, extended-spectrum beta-lactamase (ESBL)-producing Klebsiella pneumoniae, vancomycin-resistant Enterococcus faecium (VRE) and methicillin-resistant Staphylococcus aureus (MRSA). Synergy was demonstrated with the following combinations at achievable serum concentrations: gatifloxacin/piperacillin for 80% and gatifloxacin/cefepime for 60% of S. maltophilia; gatifloxacin/gentamicin for 60%, and gatifloxacin/cefepime for 50% of ESBL-producing K. pneumoniae, and in all drug combinations for 50-70% of P. aeruginosa. Indifference was noted for the majority of B. cepacia and VRE isolates. Antagonism at therapeutic serum levels was observed with gatifloxacin/piperacillin against a single isolate of B. Cepacia. MIC50 and MIC90 values represent the concentrations at which 50% and 90% of strains, respectively, were inhibited. The gatifloxacin MICs for S. maltophilia ranged from 0.5 to 4 mg/L, the lowest values of the agents tested. Gatifloxacin at 2 mg/L in combination with cefepime at 8 mg/L, and gatifloxacin at 2 mg/L in combination with piperacillin at 64 mg/L, resulted in at least a 2 log10 decrease in viable colonies, and by definition were synergic.
Substance Class Chemical
Created
by admin
on Mon Mar 31 20:05:41 GMT 2025
Edited
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on Mon Mar 31 20:05:41 GMT 2025
Record UNII
AN201CY09J
Record Status Validated (UNII)
Record Version
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Name Type Language
3-QUINOLINECARBOXYLIC ACID, 1-CYCLOPROPYL-6-FLUORO-1,4-DIHYDRO-8-METHOXY-7-(3-METHYL-1-PIPERAZINYL)-4-OXO-, HYDRATE (2:1)
Preferred Name English
GATIFLOXACIN HEMIHYDRATE
Common Name English
Code System Code Type Description
PUBCHEM
68693946
Created by admin on Mon Mar 31 20:05:41 GMT 2025 , Edited by admin on Mon Mar 31 20:05:41 GMT 2025
PRIMARY
DRUG BANK
DBSALT002718
Created by admin on Mon Mar 31 20:05:41 GMT 2025 , Edited by admin on Mon Mar 31 20:05:41 GMT 2025
PRIMARY
CAS
404858-36-2
Created by admin on Mon Mar 31 20:05:41 GMT 2025 , Edited by admin on Mon Mar 31 20:05:41 GMT 2025
PRIMARY
DAILYMED
AN201CY09J
Created by admin on Mon Mar 31 20:05:41 GMT 2025 , Edited by admin on Mon Mar 31 20:05:41 GMT 2025
PRIMARY
RXCUI
1999763
Created by admin on Mon Mar 31 20:05:41 GMT 2025 , Edited by admin on Mon Mar 31 20:05:41 GMT 2025
PRIMARY
FDA UNII
AN201CY09J
Created by admin on Mon Mar 31 20:05:41 GMT 2025 , Edited by admin on Mon Mar 31 20:05:41 GMT 2025
PRIMARY
Related Record Type Details
PARENT -> SALT/SOLVATE
ANHYDROUS->SOLVATE
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ACTIVE MOIETY