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TAIZHOU ZHENYU BIOTECHNOLOGY CO., LTD

Zhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed

Levofloxacin

Cas:100986-85-4

Min.Order:1 Kilogram

FOB Price: $2.0

Type:Lab/Research institutions

inquiry

Josun International Limited

Welcome to visit our company and buy our products! Product Name: Levifloxacin Hemihydrate Specification: USP, EP Packing: 25kg/drum Certificate: GMP, WC Certificate MOQ: 25kg Origin: China Can provide sample if custo

China API medical raw material Levofloxacin Hemihydrate USP EP with GMP

Cas:100986-85-4

Min.Order:25 Kilogram

Negotiable

Type:Other

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Dayang Chem (Hangzhou) Co.,Ltd.

Dayangchem's R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. DayangChem can provide different quantities

Levofloxacin Manufacturer/High quality/Best price/In stock

Cas:100986-85-4

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Simagchem Corporation

Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

High quality Levofloxacin Hydrochloride supplier in China

Cas:100986-85-4

Min.Order:0 Metric Ton

Negotiable

Type:Manufacturers

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Wuhan Fortuna Chemical Co.,Ltd

Unique advantages Guaranteed purity High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:Pale yellowish-white to light yellowish-white crystals or crystalline powder Storage:Cool dry place

High quality Levofloxacin hydrochloride Cas 100986-85-4 with cheap price

Cas:100986-85-4

Min.Order:0 Metric Ton

Negotiable

Type:Trading Company

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Hefei TNJ chemical industry co.,ltd

Specifications chemical materials levofloxacin powder Purity:99% Pack:25kg/drum 1kg/bag CAS No: 100986-85-4 Professional API Manufacturer Appearance:powder Storage:dry environment Package:25kg/drum or as your needs Application:Antibiotic

Levofloxacin

Cas:100986-85-4

Min.Order:25 Kilogram

Negotiable

Type:Trading Company

inquiry

Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Factory Supply Levofloxacin Hydrochloride

Cas:100986-85-4

Min.Order:1

Negotiable

Type:Other

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Xi'an Xszo Chem Co., Ltd.

1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s

High Quality 99% Levofloxacin 100986-85-4 ISO Producer

Cas:100986-85-4

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

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Chengdu Lemeitian Pharmaceutical Technology Co,. Ltd

ADVANTAGE: 1. More than 3,000 Chinese medicine reference substances / standard products available from stock, issued on the same day, multiple cities can be delivered the next day 2. The products are provided with COA, HPLC, NMR, quality assurance,

LVFX

Cas:100986-85-4

Min.Order:5 Milligram

Negotiable

Type:Manufacturers

inquiry

Enke Pharma-tech Co.,Ltd. (Cangzhou, China )

Cangzhou Enke Pharma Tech Co.,ltd. is located in Cangzhou City, Hebei province ,where is a famous petroleum chemical industry city in China. Enke Pharma a high-tech enterprise ,and we are dedicated to developing and manufacturing new api, intermedi

Levofloxacin

Cas:100986-85-4

Min.Order:1 Kilogram

FOB Price: $5.0

Type:Manufacturers

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Hebei yanxi chemical co.,LTD.

ProName: Levofloxacin CasNo: 100986-85-4 Appearance: Slight yellow powder Application: Pharmaceutical intermediate DeliveryTime: in stock PackAge: 25kg/drum Port: Any port in China ProductionCapacity: 1000 Metric Ton/

levofloxacin

Cas:100986-85-4

Min.Order:1000 Gram

FOB Price: $40.0

Type:Trading Company

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Hubei DiBo chemical co., LTD

Name:Levofloxacin hydrochloride CAS NO: 100986-85-4 Grade:Medical scientific research and export Molecular formula:C18H20FN3O4 Molecular weight:361.37 Product Quality 12 years of chemical raw materials Mature operation of the industry S

Levofloxacin hydrochloride /cas:100986-85-4 /Raw material spot

Cas:100986-85-4

Min.Order:25 Kilogram

FOB Price: $1.0 / 2.0

Type:Other

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Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1. High quality and competitive price: 1) Standard: BP/USP/EP/ enterprise standard 2) All purity 鈮 9% 3) We are manufacturers and can provide high quality products at factory prices. 2. Fast and safe delivery 1) The package can

CAS 100986-85-4 Levofloxacin

Cas:100986-85-4

Min.Order:1 Metric Ton

FOB Price: $5.0 / 10.0

Type:Trading Company

inquiry

Henan Tianfu Chemical Co., Ltd.

Henan Tianfu Chemical Co., Ltd. is located in Zhengzhou High-tech Development Zone with import and export license. We passed ISO 9001:2008 in 2009, and won "High-tech Enterprise" by provincial government in 2013.The objective of the com

TIANFU-CHEM - Levofloxacin hydrochloride

Cas:100986-85-4

Min.Order:1 Gram

FOB Price: $1000.0

Type:Lab/Research institutions

inquiry

Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

Factory direct supply CAS 100986-85-4 with best quality

Cas:100986-85-4

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

inquiry

Wuhan Han Sheng New Material Technology Co.,Ltd

Our Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We

Levofloxacin hydrochloride

Cas:100986-85-4

Min.Order:10 Kilogram

Negotiable

Type:Trading Company

inquiry

LIDE PHARMACEUTICALS LIMITED

Advantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the R&amp

Levofloxacin/ LIDE PHARMA- Factory supply / Best price

Cas:100986-85-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Sartort Biopharma Co., Ltd

Appearance:white to faint yellow powder Storage:Keep in dark place,Sealed in dry,2-8°C Package:25kg/drum Application:Antibacterial. Transportation:Express/Sea/Air Port:any port in china

Levofloxacin hydrochloride factory price

Cas:100986-85-4

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Lab/Research institutions

inquiry

Hubei Langyou International Trading Co., Ltd

1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; Appearance:White Crystalline Powder Storage:Store in sealed conta

Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

Levofloxacin 100986-85-4

Cas:100986-85-4

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

HANWAYS CHEMPHARM CO.,LIMITED

Hanways Chempharm Co., Limited, the former is Hubei Hanways Pharchem CO.,Limited, set up in 2009 in Wuhan, China. We specialize in sourcing and supplying APIs, pharmaceutical intermediates, and fine chemicals for worldwide markets. The founder has d

GMP Factory Supply Levofloxacin

Cas:100986-85-4

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Trading Company

inquiry

Xi'an Faithful Biotech Co., Ltd.

We are the manufacturers and suppliers of API in China, and warehouse in Germany and USA of California, which can quickly and safely deliver to your address 1.High quality and competitive price. 2.Free sample for your evaluation. 3.Promptly delivery

Baoji Guokang Healthchem co.,ltd

EINECS No.:204-879-3 Place of Origin:Shaanxi, China (Mainland) Type:Anesthetic Agents, Anti-Allergic Agents, Antibiotic and Antimicrobial Agents, Antineoplastic Agents, Central Nervous System Agents Grade Standard:Cosmetic Grade, Feed Grade,

High quality 100986-85-4 with best price

Cas:100986-85-4

Min.Order:1 Kilogram

FOB Price: $50.0 / 70.0

Type:Trading Company

inquiry

Qingdao Beluga Import and Export Co., LTD

Levofloxacin hydrochloride CAS:100986-85-4 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organ

Levofloxacin hydrochloride CAS:100986-85-4

Cas:100986-85-4

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Shandong Hanjiang Chemical Co., Ltd.

Hello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai

(s)-ofloxacin

Cas:100986-85-4

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Hubei Jiutian Bio-medical Technology Co., Ltd

1,we produce and sell good chemicals around the world. 2,our success rate is about 95%. this means, if customer order is accepted, the probability that the customer will obtain the ordered substances, is 95%. 3,our staff consists of highly qualifie

Levofloxacin hydrochloride CAS 100986-85-4

Cas:100986-85-4

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Mojin Biotechnology Co.,Ltd

Company information: Hebei Mojin Biotechnology Co., Ltd, Our company is a professional in chemical raw materials and chemical reagents research and development production enterprises. Our business covers more than 30 countries, most of the big custo

Low price Levofloxacin hydrochloride CAS 100986-85-4

Cas:100986-85-4

Min.Order:1 Kilogram

FOB Price: $20.0 / 30.0

Type:Trading Company

inquiry

Lonwin Chemical Group Limited

Levofloxacin hydrochloride CAS: 100986-85-4 Specification Items Specification Result Assay 98%-102% 99.67% Appearance Pale yellowish-w

Factory supply Levofloxacin hydrochloride

Cas:100986-85-4

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

Guangdong Juda Chemical Industrial Co.,Limited

1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France etc. 3) OEM/ODM Available; 4) Reasonable & Compet

High Quality CAS 100986-85-4 Levofloxacin Hydrochloride with low price

Cas:100986-85-4

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

Henan Wentao Chemical Product Co., Ltd.

Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

Levofloxacin

Cas:100986-85-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

1-methyl-piperazine
109-01-3

1-methyl-piperazine

levofloxacin Q-acid
100986-89-8

levofloxacin Q-acid

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
With potassium hydroxide In water at 55℃; for 24h; Reagent/catalyst; Time; Temperature; Solvent;97.1%
With nano iron oxide on ZrO2 coated sulfonic acid In water for 0.366667h; Reflux;96%
at 150℃; Microwave irradiation;89%
N-methylpiperazine dihydrochloride
50398-09-9, 51545-09-6, 34352-59-5

N-methylpiperazine dihydrochloride

levofloxacin Q-acid
100986-89-8

levofloxacin Q-acid

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
Stage #1: N-methylpiperazine dihydrochloride; levofloxacin Q-acid With boron trifluoride-tetrahydrofuran complex; triethylamine In acetonitrile at 20℃; for 24.5h;
Stage #2: With methanol for 24h; Reflux;
Stage #3: In ethanol at 20℃; for 16h;
92%
1-methyl-piperazine
109-01-3

1-methyl-piperazine

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
With acetic acid In water; N,N-dimethyl-formamide at 70 - 105℃; for 10h; Temperature; Solvent; Reagent/catalyst;85.7%
(S)-ethyl 6,8-difluoro-1-(1-hydroxypropan-2-yl)-7-(4-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylate
177472-29-6

(S)-ethyl 6,8-difluoro-1-(1-hydroxypropan-2-yl)-7-(4-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylate

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
Stage #1: (S)-ethyl 6,8-difluoro-1-(1-hydroxypropan-2-yl)-7-(4-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylate With potassium hydroxide; ethanol; water at 20℃; for 2.5h; Heating / reflux;
Stage #2: With acetic acid In ethanol at 0 - 20℃; for 2h; pH=7; Product distribution / selectivity;
78%
C20H24FN3O4

C20H24FN3O4

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
With hydrogenchloride In ethanol; water at 83℃; for 36h;77.9%
With hydrogenchloride In ethanol; water at 83℃; for 36h;75.3%
(S)-6,8-difluoro-1-(1-hydroxypropan-2-yl)-7-(4-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
1036016-10-0

(S)-6,8-difluoro-1-(1-hydroxypropan-2-yl)-7-(4-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
Stage #1: (S)-6,8-difluoro-1-(1-hydroxypropan-2-yl)-7-(4-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid With potassium hydroxide In ethanol; water for 3h; Heating / reflux;
Stage #2: With acetic acid In ethanol; water at 0 - 20℃; Product distribution / selectivity;
76%
G of N-methylpiperazine

G of N-methylpiperazine

levofloxacin Q-acid
100986-89-8

levofloxacin Q-acid

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
In pyridine; diethyl ether74.3%
formaldehyd
50-00-0

formaldehyd

S-(-)-9-fluoro-2,3-dihydro-3-methyl-10-(1-piperazinyl)-7-oxo-7H-pyrido-<1,2,3-de><1,4>benzoxazine-6-carboxylic acid
117707-40-1

S-(-)-9-fluoro-2,3-dihydro-3-methyl-10-(1-piperazinyl)-7-oxo-7H-pyrido-<1,2,3-de><1,4>benzoxazine-6-carboxylic acid

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
With formic acid In water at 90℃; for 10h; Temperature;74.3%
1-methyl-piperazine
109-01-3

1-methyl-piperazine

(-)-9,10-difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido<1,2,3-de><1,4>benzoxazine-6-carboxylic acid BF2-chelate
129306-33-8

(-)-9,10-difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido<1,2,3-de><1,4>benzoxazine-6-carboxylic acid BF2-chelate

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
In dimethyl sulfoxide for 17h; Ambient temperature;52%
ofloxacin
82419-36-1

ofloxacin

A

levofloxacin
100986-85-4

levofloxacin

B

(R)-ofloxacin
100986-86-5

(R)-ofloxacin

Conditions
ConditionsYield
With Bis(2-ethylhexyl)phosphoric acid; sodium dodecyl-sulfate; O,O'-dibenzoyl-L-tartaric acid In octanol; water at 20℃; for 4h; pH=7; Reflux; Resolution of racemate; optical yield given as %ee; enantioselective reaction;A 8.54%
B 34.23%
With (2-hydroxypropyl)-α-cyclodextrin In phosphate buffer pH=2.3; capillary electrophoresis;
With Bis(2-ethylhexyl)phosphoric acid; Di-p-toluoyl-L-tartaric acid; O,O'-dibenzoyl-L-tartaric acid In octanol; water at 25℃; for 0.5h; pH=6.86; Resolution of racemate; aq. phosphate buffer; enantioselective reaction;
ethyl 3-(2,3,4,5-tetrafkuorophenyl)-3-oxopropanoate
94695-50-8

ethyl 3-(2,3,4,5-tetrafkuorophenyl)-3-oxopropanoate

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: acetic anhydride / 2 h / 110 °C
2: CH2Cl2 / 0.5 h / Ambient temperature
3: 59 percent / 50percent NaH / dimethylsulfoxide / 3 h / Ambient temperature
4: 70 percent / 10percent aq. KOH / tetrahydrofuran / 2 h / 65 - 70 °C
5: 83 percent / pyridine / 12 h / 120 °C
View Scheme
3-(2,3,4,5-tetrafluorophenyl)-3-oxo-2-(ethoxymethylene)-propanoic acid ethyl ester
103995-33-1

3-(2,3,4,5-tetrafluorophenyl)-3-oxo-2-(ethoxymethylene)-propanoic acid ethyl ester

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: CH2Cl2 / 0.5 h / Ambient temperature
2: 59 percent / 50percent NaH / dimethylsulfoxide / 3 h / Ambient temperature
3: 70 percent / 10percent aq. KOH / tetrahydrofuran / 2 h / 65 - 70 °C
4: 83 percent / pyridine / 12 h / 120 °C
View Scheme
(+)-ethyl 2-<<<(S)-1-hydroxyprop-2-yl>amino>methylene>-3-oxo-3-(2,3,4,5-tetrafluorophenyl)propionate
110548-02-2

(+)-ethyl 2-<<<(S)-1-hydroxyprop-2-yl>amino>methylene>-3-oxo-3-(2,3,4,5-tetrafluorophenyl)propionate

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 59 percent / 50percent NaH / dimethylsulfoxide / 3 h / Ambient temperature
2: 70 percent / 10percent aq. KOH / tetrahydrofuran / 2 h / 65 - 70 °C
3: 83 percent / pyridine / 12 h / 120 °C
View Scheme
(-)-ethyl 1,4-dihydro-1-<1(S)-(hydroxymethyl)ethyl>-4-oxo-6,7,8-trifluoroquinoline-3-carboxylate
110548-03-3

(-)-ethyl 1,4-dihydro-1-<1(S)-(hydroxymethyl)ethyl>-4-oxo-6,7,8-trifluoroquinoline-3-carboxylate

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 70 percent / 10percent aq. KOH / tetrahydrofuran / 2 h / 65 - 70 °C
2: 83 percent / pyridine / 12 h / 120 °C
View Scheme
1-methyl-piperazine
109-01-3

1-methyl-piperazine

(3S)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid-boron difluoride chelate complex

(3S)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid-boron difluoride chelate complex

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
Stage #1: 1-methyl-piperazine; (3S)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid-boron difluoride chelate complex With triethylamine In dimethyl sulfoxide at 20℃; for 17h;
Stage #2: With triethylamine In ethanol for 8h; Heating / reflux;
Stage #3: With hydrogenchloride In water
(-) potassium N-(1-hydroxy-propy-2(S)-yl)-6-fluoro-7-(N-methylpiperazinyl)-8-nitro-quinol-4-one-3-carboxylate

(-) potassium N-(1-hydroxy-propy-2(S)-yl)-6-fluoro-7-(N-methylpiperazinyl)-8-nitro-quinol-4-one-3-carboxylate

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
Stage #1: (-) potassium N-(1-hydroxy-propy-2(S)-yl)-6-fluoro-7-(N-methylpiperazinyl)-8-nitro-quinol-4-one-3-carboxylate With potassium hydroxide In methanol for 2.5h; Heating / reflux;
Stage #2: With acetic acid In methanol
levofloxacin Q-acid
100986-89-8

levofloxacin Q-acid

ascorbic acid
50-81-7

ascorbic acid

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
In dimethyl sulfoxide5.63 g (87.6%)
sodium metabisulfite

sodium metabisulfite

levofloxacin Q-acid
100986-89-8

levofloxacin Q-acid

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
In dimethyl sulfoxide11.8 g (92.4%)
1-methyl-piperazine
109-01-3

1-methyl-piperazine

1-methoxy-2-propanol
107-98-2

1-methoxy-2-propanol

n-heptane
142-82-5

n-heptane

levofloxacin Q-acid
100986-89-8

levofloxacin Q-acid

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
2.98 g (77.3%)
levofloxacin Q-acid
100986-89-8

levofloxacin Q-acid

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
In 1-methyl-piperazine; n-heptane
1-methyl-piperazine
109-01-3

1-methyl-piperazine

trifluoroborane diethyl ether
109-63-7

trifluoroborane diethyl ether

levofloxacin Q-acid
100986-89-8

levofloxacin Q-acid

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
With triethylamine In hydrogenchloride; methanol; diethyl ether; dimethyl sulfoxide
1-methyl-piperazine
109-01-3

1-methyl-piperazine

chloroform-methanol-water

chloroform-methanol-water

levofloxacin Q-acid
100986-89-8

levofloxacin Q-acid

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
In ethanol; dimethyl sulfoxide
ofloxacin
82419-36-1

ofloxacin

Cu(II)-coordinated G-rich oligonucleotides

Cu(II)-coordinated G-rich oligonucleotides

A

levofloxacin
100986-85-4

levofloxacin

B

(R)-ofloxacin
100986-86-5

(R)-ofloxacin

Conditions
ConditionsYield
pH=7; Reagent/catalyst; Resolution of racemate;
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: acetic acid; sulfuric acid / water / 4 h / Reflux
2: triethylamine / dimethyl sulfoxide / 8 h / 90 °C
View Scheme
Multi-step reaction with 2 steps
1: sulfuric acid; acetic acid / N,N-dimethyl-formamide / 1 h / Reflux; Green chemistry
2: water / 10.5 h / 110 °C / Green chemistry
View Scheme
Multi-step reaction with 2 steps
1: sulfuric acid; acetic acid / water / 3 h / 20 °C / Reflux
2: water / 15.5 h / 120 °C
View Scheme
Multi-step reaction with 2 steps
1: sulfuric acid; acetic acid / N,N-dimethyl-formamide / 1 h / Reflux
2: water / 10.5 h / 110 °C
View Scheme
(+)-ethyl 3-[(1-hydroxyprop-2(S)-yl)amino]acrylate

(+)-ethyl 3-[(1-hydroxyprop-2(S)-yl)amino]acrylate

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: ammonia / toluene / 4 h / 50 °C
2: toluene / 50 - 100 °C / pH < 7
3: hydrogenchloride / toluene; water / pH < 7
4: potassium fluoride / N,N-dimethyl-formamide / Reflux
5: acetic acid; sulfuric acid / water / 4 h / Reflux
6: triethylamine / dimethyl sulfoxide / 8 h / 90 °C
View Scheme
C14H31NO3Si2

C14H31NO3Si2

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: toluene / 50 - 100 °C / pH < 7
2: hydrogenchloride / toluene; water / pH < 7
3: potassium fluoride / N,N-dimethyl-formamide / Reflux
4: acetic acid; sulfuric acid / water / 4 h / Reflux
5: triethylamine / dimethyl sulfoxide / 8 h / 90 °C
View Scheme
C21H31F4NO4Si2

C21H31F4NO4Si2

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: hydrogenchloride / toluene; water / pH < 7
2: potassium fluoride / N,N-dimethyl-formamide / Reflux
3: acetic acid; sulfuric acid / water / 4 h / Reflux
4: triethylamine / dimethyl sulfoxide / 8 h / 90 °C
View Scheme
3-(2-hydroxy-1-methylethylamino)-2-(2,3,4,5-tetrafluorobenzoyl)acrylic acid ethyl ester

3-(2-hydroxy-1-methylethylamino)-2-(2,3,4,5-tetrafluorobenzoyl)acrylic acid ethyl ester

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: potassium fluoride / N,N-dimethyl-formamide / Reflux
2: acetic acid; sulfuric acid / water / 4 h / Reflux
3: triethylamine / dimethyl sulfoxide / 8 h / 90 °C
View Scheme
Multi-step reaction with 3 steps
1: potassium carbonate / N,N-dimethyl-formamide / 4 h / 100 °C / Green chemistry
2: sulfuric acid; acetic acid / N,N-dimethyl-formamide / 1 h / Reflux; Green chemistry
3: water / 10.5 h / 110 °C / Green chemistry
View Scheme
Multi-step reaction with 3 steps
1: potassium carbonate / N,N-dimethyl-formamide / 8 h / 150 °C
2: sulfuric acid; acetic acid / water / 3 h / 20 °C / Reflux
3: water / 15.5 h / 120 °C
View Scheme
Multi-step reaction with 3 steps
1: potassium carbonate / N,N-dimethyl-formamide / 4 h / 100 °C
2: sulfuric acid; acetic acid / N,N-dimethyl-formamide / 1 h / Reflux
3: water / 10.5 h / 110 °C
View Scheme
Multi-step reaction with 3 steps
1: 24 h / 120 °C
2: potassium carbonate / 16 h / 140 °C
3: hydrogenchloride / ethanol; water / 36 h / 83 °C
View Scheme
C20H24FN3O4S

C20H24FN3O4S

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
With GLUTATHIONE In methanol at 23℃; pH=6.5; Kinetics;
LACTIC ACID
849585-22-4

LACTIC ACID

levofloxacin
100986-85-4

levofloxacin

levofloxacin lactate

levofloxacin lactate

Conditions
ConditionsYield
In ethanol at 80℃; for 1h; Temperature;94.3%
cerium(IV) sulphate

cerium(IV) sulphate

water
7732-18-5

water

levofloxacin
100986-85-4

levofloxacin

[Ce(levofloxacin)2(H2O)2]SO4*5H2O

[Ce(levofloxacin)2(H2O)2]SO4*5H2O

Conditions
ConditionsYield
With sodium hydroxide In methanol; acetone at 20℃; for 24h;94%
levofloxacin
100986-85-4

levofloxacin

Propargylamine
2450-71-7

Propargylamine

(S)-9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-N-(prop-2-yn-1-yl)-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxamide

(S)-9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-N-(prop-2-yn-1-yl)-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxamide

Conditions
ConditionsYield
Stage #1: levofloxacin With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In tetrahydrofuran at 20℃; Inert atmosphere;
Stage #2: Propargylamine With potassium carbonate In tetrahydrofuran; N,N-dimethyl-formamide at 20℃; for 1h; Inert atmosphere;
90.7%
levofloxacin
100986-85-4

levofloxacin

(-)-9-fluoro-3-methyl-10(4-methyl-1-piperazinyl)-7-oxo-2,3-dihydro-7H-pyrido [1,2,3-de]-1,4-benzoxazine-6-carboxylic acid hemihydrate

(-)-9-fluoro-3-methyl-10(4-methyl-1-piperazinyl)-7-oxo-2,3-dihydro-7H-pyrido [1,2,3-de]-1,4-benzoxazine-6-carboxylic acid hemihydrate

Conditions
ConditionsYield
In water; ethyl acetate for 1h; Purification / work up; Heating / reflux;90%
In 2,8-dimethylnonan-5-one; water for 1h; Purification / work up; Heating / reflux;89.6%
In acetic acid methyl ester; water for 1h; Purification / work up; Heating / reflux;85.6%
di(pyridin-2-yl)amine
1202-34-2

di(pyridin-2-yl)amine

copper(II) choride dihydrate

copper(II) choride dihydrate

levofloxacin
100986-85-4

levofloxacin

C28H28ClCuFN6O4*ClH

C28H28ClCuFN6O4*ClH

Conditions
ConditionsYield
Stage #1: copper(II) choride dihydrate; levofloxacin With potassium hydroxide In methanol at 20℃; for 0.5h;
Stage #2: di(pyridin-2-yl)amine In methanol at 60℃; for 2h;
83%
4-amino-N-(diaminomethylene) benzenesulfonamide
57-67-0

4-amino-N-(diaminomethylene) benzenesulfonamide

levofloxacin
100986-85-4

levofloxacin

(S)−7-((4-(N-carbamimidoylsulfamoyl)phenyl)imino)−9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)−2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

(S)−7-((4-(N-carbamimidoylsulfamoyl)phenyl)imino)−9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)−2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

Conditions
ConditionsYield
With acetic acid In methanol for 2h; Microwave irradiation; Reflux;82.94%
uranyl nirate hexahydrate

uranyl nirate hexahydrate

levofloxacin
100986-85-4

levofloxacin

[UO2(levofloxacin)2(H2O)2]*2H2O

[UO2(levofloxacin)2(H2O)2]*2H2O

Conditions
ConditionsYield
With sodium hydroxide In methanol; acetone at 20℃; for 24h;81.4%
octadecanoic acid chloromethyl ester
77878-01-4

octadecanoic acid chloromethyl ester

levofloxacin
100986-85-4

levofloxacin

A

C37H72O4
121819-05-4

C37H72O4

B

(3S)-6-[(octadecanoyloxy)methyl] 9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate
1261134-66-0

(3S)-6-[(octadecanoyloxy)methyl] 9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate

Conditions
ConditionsYield
Stage #1: levofloxacin With potassium carbonate In N,N-dimethyl-formamide at 90℃; for 0.333333h;
Stage #2: octadecanoic acid chloromethyl ester In N,N-dimethyl-formamide at 90℃; for 1h;
A n/a
B 81%
Stage #1: levofloxacin With potassium carbonate In acetonitrile for 8h; Reflux;
Stage #2: octadecanoic acid chloromethyl ester With tetra-(n-butyl)ammonium iodide In acetonitrile for 168h; Reflux;
isoniazid
54-85-3

isoniazid

levofloxacin
100986-85-4

levofloxacin

2-[3(1-cyclopropyl-6-fluoro-8-methoxy)-7-(3-methylpiperazin-1-yl)-4-oxo-1H quinolinyl]-5-(pyridin-4-yl)-1,3,4-oxadiazole

2-[3(1-cyclopropyl-6-fluoro-8-methoxy)-7-(3-methylpiperazin-1-yl)-4-oxo-1H quinolinyl]-5-(pyridin-4-yl)-1,3,4-oxadiazole

Conditions
ConditionsYield
With trichlorophosphate Reflux;81%
gold(III) tetrachloride trihydrate

gold(III) tetrachloride trihydrate

levofloxacin
100986-85-4

levofloxacin

[AuCl2(levofloxacin)]Cl.2H2O

[AuCl2(levofloxacin)]Cl.2H2O

Conditions
ConditionsYield
In methanol at 20℃; for 24h;80%
sulfanilamide
63-74-1

sulfanilamide

levofloxacin
100986-85-4

levofloxacin

(S)−9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)−7-((4-sulfamoylphenyl)imino)−2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

(S)−9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)−7-((4-sulfamoylphenyl)imino)−2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

Conditions
ConditionsYield
With acetic acid In methanol for 2h; Microwave irradiation; Reflux;80%
chloromethyl n-dodecanoate
61413-67-0

chloromethyl n-dodecanoate

levofloxacin
100986-85-4

levofloxacin

A

C25H48O4
1261134-88-6

C25H48O4

B

(3S)-6-[(dodecanoyloxy)methyl] 9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate
1261134-60-4

(3S)-6-[(dodecanoyloxy)methyl] 9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate

Conditions
ConditionsYield
Stage #1: levofloxacin With potassium carbonate In N,N-dimethyl-formamide at 90℃; for 0.333333h;
Stage #2: chloromethyl n-dodecanoate In N,N-dimethyl-formamide at 90℃; for 1h;
A n/a
B 79%
Stage #1: levofloxacin With potassium carbonate In acetonitrile for 8h; Reflux;
Stage #2: chloromethyl n-dodecanoate With tetra-(n-butyl)ammonium iodide In acetonitrile for 168h; Reflux;
levofloxacin
100986-85-4

levofloxacin

chloromethyl n-hexadecanoate
61413-69-2

chloromethyl n-hexadecanoate

A

C33H64O4
91360-29-1

C33H64O4

B

(3S)-6-[(hexadecanoyloxy)methyl] 9-fluoro-3,7-dihydro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-2H-[1,4]oxazino-[2,3,4-ij]quinoline-6-carboxylate
1261134-64-8

(3S)-6-[(hexadecanoyloxy)methyl] 9-fluoro-3,7-dihydro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-2H-[1,4]oxazino-[2,3,4-ij]quinoline-6-carboxylate

Conditions
ConditionsYield
Stage #1: levofloxacin With potassium carbonate In N,N-dimethyl-formamide at 90℃; for 0.333333h;
Stage #2: chloromethyl n-hexadecanoate In N,N-dimethyl-formamide at 90℃; for 1h;
A n/a
B 79%
Stage #1: levofloxacin With potassium carbonate In acetonitrile for 8h; Reflux;
Stage #2: chloromethyl n-hexadecanoate With tetra-(n-butyl)ammonium iodide In acetonitrile for 168h; Reflux;
levofloxacin
100986-85-4

levofloxacin

decanoyloxymethyl chloride
67317-62-8

decanoyloxymethyl chloride

A

(3S)-6-[(decanoyloxy)methyl] 9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate
1261134-58-0

(3S)-6-[(decanoyloxy)methyl] 9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate

B

Methylendidecanoat
76068-80-9

Methylendidecanoat

Conditions
ConditionsYield
Stage #1: levofloxacin With potassium carbonate In N,N-dimethyl-formamide at 90℃; for 0.333333h;
Stage #2: decanoyloxymethyl chloride In N,N-dimethyl-formamide at 90℃; for 1h;
A 79%
B n/a
1,2,3-Benzotriazole
95-14-7

1,2,3-Benzotriazole

levofloxacin
100986-85-4

levofloxacin

(S)-6-(1H-benzo[d][1,2,3]triazole-1-carbonyl)-9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-2H-[1,4]oxazino[2,3,4-ij]quinolin-7(3H)-one
1381763-83-2

(S)-6-(1H-benzo[d][1,2,3]triazole-1-carbonyl)-9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-2H-[1,4]oxazino[2,3,4-ij]quinolin-7(3H)-one

Conditions
ConditionsYield
With thionyl chloride In dichloromethane at 20℃;79%
dimethyltin dichloride
753-73-1

dimethyltin dichloride

levofloxacin
100986-85-4

levofloxacin

C38H44F2N6O8Sn

C38H44F2N6O8Sn

Conditions
ConditionsYield
Stage #1: levofloxacin With sodium hydrogencarbonate In water at 25℃; for 0.5h;
Stage #2: dimethyltin dichloride In toluene Reflux;
79%
copper(II) choride dihydrate

copper(II) choride dihydrate

bathophenanthroline
1662-01-7

bathophenanthroline

levofloxacin
100986-85-4

levofloxacin

C42H35ClCuFN5O4

C42H35ClCuFN5O4

Conditions
ConditionsYield
Stage #1: copper(II) choride dihydrate; levofloxacin With potassium hydroxide In methanol at 20℃; for 0.5h;
Stage #2: bathophenanthroline In methanol at 60℃; for 2h;
79%
sulfamerazina
127-79-7

sulfamerazina

levofloxacin
100986-85-4

levofloxacin

(S)−9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)−7-((4-(N-(4-methylpyrimidin-2-yl)sulfamoyl)phenyl)imino)−2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

(S)−9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)−7-((4-(N-(4-methylpyrimidin-2-yl)sulfamoyl)phenyl)imino)−2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

Conditions
ConditionsYield
With acetic acid In methanol for 2h; Microwave irradiation; Reflux;78.91%
zirconyl chloride octahydrate

zirconyl chloride octahydrate

levofloxacin
100986-85-4

levofloxacin

[ZrO(levofloxacin)2(H2O)]*6H2O

[ZrO(levofloxacin)2(H2O)]*6H2O

Conditions
ConditionsYield
With sodium hydroxide In methanol; acetone at 20℃; for 24h;78.6%
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