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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 3948Generated: October 27, 2026

Lomefloxacin

Lomefloxacine · LFLX · dm-10 · Clfimono · SC 47111A · Lomel9act · LOMEFLOXACIN · LEMOFLOXACIN

https://huagongshe.com/en/chemical/3948

Lomefloxacin molecular structure

Identifiers & Physical Properties

CAS No.98079-51-7
Molecular formulaC17H19F2N3O3
Average molar mass351.35 g/mol
Monoisotopic mass351.13944791 g/mol
SMILESCCn1cc(C(=O)O)c(=O)c2cc(F)c(N3CCNC(C)C3)c(F)c21
InChIKeyZEKZLJVOYLTDKK-UHFFFAOYSA-N
PubChem CID3948
ChEMBLCHEMBL561
ChEBICHEBI:116278
EC No.619-317-6
DTXSIDDTXSID4040680

Chemical & Physical Properties

XLogP-0.8
Topological polar surface area72.9
Hydrogen bond donors2
Hydrogen bond acceptors8
Rotatable bonds3
Heavy atoms25
Formal charge0
Complexity585
DrugsPharmaceuticals -> AntibioticsPharmaceuticals -> Anti infectives for systemic use -> Antibacterials for systemic use
LogP (partition coefficient)2.8
Solubility1.06e-01 g/LDMSO (Slightly), Methanol (Slightly, Heated, Sonicated)
Human DrugsBreast FeedingLactationMilk, HumanAnti-Infective AgentsAntibacterial AgentsQuinolonesFluoroquinolones
Melting point239-240.5 °C239 - 240.5 °C239-240 C
Physical DescriptionSolid
Dissociation Constants5.742
Collision Cross Section191.3 Ų [M+H]+ [CCS Type: TWMethod: calibrated with Waters Major Mix]191.04 Ų [M+K]+ [CCS Type: TWMethod: calibrated with polyalanine and drug standards]
Boiling point542.7±50.0 °C(Predicted)
Density1.342±0.06 g/cm3(Predicted)
Storage conditionsKeep in dark place,Sealed in dry,Store in freezer, under -20°C
Physical stateSolid
pKa (acidity coefficient)-0.25±0.20(Predicted)
ColorPale Yellow to Light Yellow
CAS DataBase Reference98079-51-7(CAS DataBase Reference)
EWG's Food Scores1
FDA UNIIL6BR2WJD8V
ATC codeJ01MA07,S01AE04
EPA Substance Registry System3-Quinolinecarboxylic acid, 1-ethyl-6,8-difluoro-1,4-dihydro-7-(3-methyl-1-piperazinyl)-4-oxo- (98079-51-7)
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH302-H312-H332
GHS precautionary statementsP280
Hazard symbolsXn,Xi
Risk statements (R)22-36/37/38
Safety statements (S)26-36
Water hazard class (WGK)3
RTECS numberVB1997500
Customs code29419000
ToxicityLD50 in mice (mg/kg): 245.6 i.v.>4000 orally (Itoh)
REACH registrationsActive

Safety & Regulations

GHS classificationWarningH302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]P261, P264, P270, P271, P280, P301+P317, P302+P352, P304+P340, P317, P321, P330, P362+P364, and P501 (click each P-code to see the statement)The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory.
Regulatory informationStatus: Active Update: 17-03-2017 https://echa.europa.eu/registration-dossier/-/registered-dossier/19305
Hazard Classes and CategoriesAcute Tox. 4 (100%)
Drug Induced Liver InjuryDrug-Induced Liver Injury Severity and Toxicity (DILIst)lomefloxacinDILI NegativeOralDOI:10.1016/j.drudis.2019.09.022
Effects During Pregnancy and Lactation◉ Summary of Use during Lactation
Water hazard class (WGK)3
RTECS numberVB1997500
Customs code29419000
ToxicityLD50 in mice (mg/kg): 245.6 i.v.>4000 orally (Itoh)
Risk statements (R)22-36/37/38
Signal wordWarning
GHS pictogramGHS07
Hazard symbolsXn,Xi
Safety statements (S)26-36
GHS hazard statementsH302-H312-H332
REACH registrationsActive
GHS precautionary statementsP280

Applications & Uses

Description

Lomefloxacin is a kind of fluoroquinolone antibiotics used for the treatment of bacterial infections such as bronchitis and urinary tract infection. It can also used to prevent the urinary tract infections prior surgery. It has bactericidal effect against a wide range of gram-negative and gram-positive organisms. It takes effect through interfering with the normal function of the bacteria enzyme DNA gyrase and topoisomerase IV, further inhibiting the transcription and replication of bacterial DNA. This effect results in strand breakage of bacterial chromosome, supercoiling and resealing, further causing bacteria death.

Description

Lomefloxacin is a once-daily, third-generation quinolone antibiotic useful in the treatment of bacterial infections. The new fluorinated quinolone does not interfere with the metabolism of theophylline; it is efficacious against pathogens resistant to cephalosporins, penicillins and aminoglycosides.

Uses

Anti bacterial.