노르플록사신

노르플록사신 속성

노르플록사신 MSDS

N-Desmethylpefloxacin

노르플록사신 C화학적 특성, 용도, 생산

개요

Norfloxacin is the first of the third generation nalidixic acid analogs to reach the marketplace. It exhibits potent in vitro and in vivo activity against Pseudomonas, enteric gram-negative rods and gram-positive cocci. Norfloxacin is orally effective in the treatment of urinary tract infections, including those due to organisms refractory to many other agents.

화학적 성질

Off-white to light yellow cryst powder

용도

It finds it application as a fluorinated quinolone antibacterial. It is clinically used to treat urinary tract infections and prostatitis. In neutrophils from cirrhotic subjects, norfloxacin increases expression of IL-10 and heme oxygenase 1 (HO-1) and decreases expression of pro-inflammatory cytokines. Additionally, when complexed with gold(III), norfloxacin binds DNA and inhibits cellular proliferation in several cancer cell lines.

정의

ChEBI: A quinolinemonocarboxylic acid with broad-spectrum antibacterial activity against most gram-negative and gram-positive bacteria. Norfloxacin is bactericidal and its mode of action depends on blocking of bacterial DNA replication by binding itself to an enz me called DNA gyrase.

Antimicrobial activity

It is active against a wide range of Gram-negative bacteria, including Enterobacteriaceae and Campylobacter spp. Ps. aeruginosa, Acinetobacter, Serratia and Providencia spp. are weakly susceptible (and often resistant). It has no useful activity against anaerobes, Chlamydia, Mycoplasma and Mycobacterium spp.

Pharmaceutical Applications

A 6-fluoro, 7-piperazinyl quinoline available for oral administration and as an ophthalmic ointment.

Pharmacokinetics

Oral absorption: 50–70%
C_max 400 mg oral :1.5 mg/L after 1–1.5 h
Plasma half-life :3–4 h
Volume of distribution: 2.5–3.1 L/kg
Plasma protein binding: 15%
absorption and distribution
Norfloxacin displays linear kinetics. There is no significant accumulation with the recommended dosage of 400 mg every 12 h. Food slightly delays but does not otherwise impair absorption. Antacids reduce absorption. It is widely distributed, but concentrations in tissues other than those of the urinary tract are low： levels in the prostate are around 2.5 mg/g.
Metabolism and excretion
Six or more inactive metabolites are produced. Around 30% of a dose appears as unchanged drug in the urine and <10% as metabolites, producing peak concentrations of microbiologically active drug of around 100–400 mg/L. Urinary recovery is halved by probenecid, with little effect on the plasma concentration. The apparent plasma elimination half-life increases with renal impairment, rising to around 8 h in the anuric patient. Some of the drug appears in the bile where concentrations three- to seven-fold greater than the simultaneous plasma levels are achieved, but this is not a significant route of elimination and hepatic impairment is without effect. Very variable quantities, averaging 30% of a dose, appear in the feces, producing concentrations of active agent of around 200–2000 mg/kg.

Clinical Use

Complicated and uncomplicated urinary tract infections (including prophylaxis in recurrent infections), prostatitis
Uncomplicated gonorrhea
Gastroenteritis caused by Salmonella, Shigella and Campylobacter spp., Vibrio cholerae
Conjunctivitis (ophthalmic preparation)

부작용

Untoward reactions are those common to the fluoroquinolones. Gastrointestinal tract disturbances, which are generally mild, have been reported in 2–4% of patients. CNS disturbances have largely been limited to headache, drowsiness and dizziness. Co-administration with theophylline results in increased plasma theophylline levels.

Safety Profile

Poison by intravenous route.Moderately toxic by other routes. Human systemic effectsby ingestion: musculoskeletal changes. An experimentalteratogen. Other experimental reproductive effects.Mutation data reported. When heated to decomposition itemits

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노르플록사신 공급 업체

공급자	전화	이메일	국가	제품 수	이점
Zibo Wei Bin Import & Export Trade Co. Ltd.	+86-0533-2091136 +8613864437655	ziboweibinmaoyi@163.com	China	100	58
Nantong Guangyuan Chemicl Co,Ltd	+undefined17712220823	admin@guyunchem.com	China	616	58
Shanghai Affida new material science and technology center	+undefined15081010295	2691956269@qq.com	China	359	58
Shaanxi TNJONE Pharmaceutical Co., Ltd	+8618740459177	sarah@tnjone.com	China	874	58
Henan Suikang Pharmaceutical Co.,Ltd.	+8618239973690	sales@suikangpharm.com	China	179	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21691	55
Hubei XinRunde Chemical Co., Ltd.	+8615102730682	bruce@xrdchem.cn	CHINA	566	55
career henan chemical co	+86-0371-86658258	sales@coreychem.com	China	29914	58
Hubei Jusheng Technology Co.,Ltd.	18871490254	linda@hubeijusheng.com	CHINA	28180	58
Hebei Jimi Trading Co., Ltd.	+86 319 5273535	bestoneforyou@sina.com	CHINA	288	58

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