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Josun International Limited

Product Name: DL-Chloramphenicol Other name: Synthomycin, Sintomycin Cas No.: 56-75-7 Specification: In-house standard Assay: 98%-102% Specific optical rotation: 0 ° Packing: 25kg/drum MOQ: 100kg Origin: China Pls no

DL-Chloramphenicol / Synthomycin / Sintomycin

Cas:56-75-7

Min.Order:100 Kilogram

Negotiable

Type:Other

inquiry

Baoji Guokang Healthchem co.,ltd

Our company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At present

A semisynthetic, broad-spectrum antibiotic derived Chloramphenicol CAS:56-75-7

Cas:56-75-7

Min.Order:1 Kilogram

FOB Price: $62.0 / 65.0

Type:Trading Company

inquiry

GUANGZHOU MEDCAN PHARMATECH LTD

Chloramphenicol 1.Characters,hite to grayish-white or yellowish-white, 2.Assay,97.00%~103.00% Appearance:Awhite to grayish-white or yellowish-white,fine crystalline powder or fine crystals,needles or elong Storage:storage in ambient temperature P

Chloramphenicol

Cas:56-75-7

Min.Order:25 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

SJZ THLD IMP & EXP CO LTD

1.Name:Chloramphenicol 2.Cas No.:56-75-7 3.Use:Antibacterial 4.Standards:BP/USP 5.Appearance: A white, grayish-white or yellowish-white, fine, crystalline powder or fine crystals, needles or elongated plates, slightly soluble in water, freely

supply chloramphenicol API

Cas:56-75-7

Min.Order:0 Metric Ton

Negotiable

Type:Trading Company

inquiry

Sinoway Industrial Co., Ltd.

Why is SINOWAY: 1) Specialized in pharmaceutical and healthcare industrial for 34 years. 2) ISO 9001:2015 & SGS audited supplier . 3) Accept various payment terms : T.T 30-60 days. 4) We have warehouse in USA with quickly shipment . 5) We c

99% up GMP DMF Chloramphenicol 56-75-7

Cas:56-75-7

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

Hangzhou Dingyan Chem Co., Ltd

Items Standard Test Result Appearance A white, greyish-white or yellowish-white, fine, crystalline powder or fine crystals, needles or elongated plates

High purity Various Specifications chloroamphenicol CAS:56-75-7

Cas:56-75-7

Min.Order:1 Gram

FOB Price: $100.0 / 500.0

Type:Manufacturers

inquiry

Kono Chem Co.,Ltd

Chloramphenicol CAS: 56-75-7 MF: C11H12Cl2N2O5 MW: 323.13 EINECS: 200-287-4 Chemical Properties: White to grey-white crystalline powder. Very bitter taste. Mp 149.7-150.7 ºC. Can be under high vacuum sublimati

CAS:56-75-7 Chloramphenicol

Cas:56-75-7

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

Wuhan Fortuna Chemical Co.,Ltd

Unique advantages for Chloramphenicol Cas 56-75-7 Guaranteed the purity High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:Powder Storage:2-8°C Package:1kg/foil bag, 25kg/drum or as you requ

Wholesale high quality Chloramphenicol Cas 56-75-7 with competitive price

Cas:56-75-7

Min.Order:1 Kilogram

FOB Price: $110.0

Type:Trading Company

inquiry

Hefei TNJ chemical industry co.,ltd

CAS No.: 56-75-7 Other Names: levogyre MF: C11H12Cl2N2O5 EINECS No.: 200-287-4 Place of Origin: Anhui, China

L-Chloramphenicol 56-75-7

Cas:56-75-7

Min.Order:1 Metric Ton

Negotiable

Type:Trading Company

inquiry

Xi'an Quanao Biotech Co., Ltd.

Xi’an Quanao Biotech Co., Ltd. with 18 years experience in plant extract filed. Product grade: Medicine, Health care product, Cosmetics, Food, Beverage, Feed. Hot selling market: Europe, North America, South America, Middle East, Asia Pacifi

Veterinary medicine Chloramphenicol powder price cas 56-75-7

Cas:56-75-7

Min.Order:1 Kilogram

FOB Price: $43.0 / 51.0

Type:Manufacturers

inquiry

Hangzhou JINLAN Pharm-Drugs Technology Co., Ltd

We can provide GMP validation service that complies with SFDA, FDA, WHO and EU EMPA.Excellent registration team could help us easlily to register our products in different countries.If you and your customer are interested in some products or need C

Chloramphenicol manufacturer with low price

Cas:56-75-7

Min.Order:1 Gram

Negotiable

Type:Manufacturers

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 Chloramphenicol(Veterinary Medicine)

Cas:56-75-7

Min.Order:1

Negotiable

Type:Other

inquiry

shanghai Tauto Biotech Co., Ltd

17-year experience in Phytochemicals Each product has passed very strict tests (NMR\MS\HPLC) Agents in 13 countries Certified by ISO 9001:2008 quality management system Leader Supplier of Botanical Reference Materials in China

Chloramphenicol

Cas:56-75-7

Min.Order:10 Milligram

Negotiable

Type:Manufacturers

inquiry

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

Factory Price API 99% CHLOROAMPHENICOL VETRANAL 56-75-7 GMP Manufacturer

Cas:56-75-7

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

inquiry

COLORCOM LTD.

Colorcom is a global leader in industrial chemical manufacturing and is continuously innovating and transforming to exceed client expectations and industry standards. Colorcom prides itself on superior customer and technical focus, while focusing on

Chloramphenicol

Cas:56-75-7

Min.Order:1 Metric Ton

Negotiable

Type:Manufacturers

inquiry

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 quantiti

High purity Chloramphenicol TOP1 supplier in China

Cas:56-75-7

Min.Order:100 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

inquiry

Chemwill Asia Co., Ltd.

Chloramphenicol CAS 56-75-7 In stock

Cas:56-75-7

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Manufacturers

inquiry

Hebei yanxi chemical co.,LTD.

CHENGDU YANXI is a comprehensive manufacturer and an international distribution of products throughout the world. Specialized in Scrap metal, Chemical raw materials, Paper products and color industry. We aim to become leading position in global dis

Active pharmaceutical ingredient, DL-Chloramphenicol, 56-75-7 CAS No.: 56-75-7

Cas:56-75-7

Min.Order:1 Kilogram

FOB Price: $4.0 / 5.0

Type:Trading Company

inquiry

Hubei DiBo chemical co., LTD

Name:chloroamphenicol CAS NO:56-75-7 Grade:Medical scientific research and export Molecular formula:C11H12Cl2N2O5 Molecular weight: 323.1294 Product Quality 12 years of chemical raw materials Mature operation of the industry System stabili

chloroamphenicol/ CAS:56-75-7 / raw material/ high-quality

Cas:56-75-7

Min.Order:25 Kilogram

FOB Price: $2.0 / 3.0

Type:Other

inquiry

Henan Tianfu Chemical Co., Ltd.

Our company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O

TIANFU CHEM----Chloramphenicol

Cas:56-75-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

With our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufactu

Chloramphenicol Powder 56-75-7

Cas:56-75-7

Min.Order:1 Kilogram

FOB Price: $1.0 / 10.0

Type:Trading Company

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

New production CAS 56-75-7 with best quality

Cas:56-75-7

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

Hot Sell Factory Supply Raw Material CAS 56-75-7 Chloramphenicol

Cas:56-75-7

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

Chloramphenicol/ LIDE PHARMA- Factory supply / Best price

Cas:56-75-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Henan Sinotech Import&Export Corporation

Product Name: chloramphenicol Appearance : White or slightly yellowish white fine crystalline powder or needles Cas No.: 56-75-7 Form: White or slightly yellowish white Purity: >99% Molecular weight:323.1294 Appearance:White powde

Chloramphenicol

Cas:56-75-7

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

inquiry

Hangzhou Sartort Biopharma Co., Ltd

Appearance:White to yellowish crystalline powder Storage:R.T Package:25kg/drum Application:Broad-spectrum antibiotics Transportation:Express/Sea/Air Port:Any port in China

API Chloramphenical cas 56-75-7

Cas:56-75-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Hubei Langyou International Trading Co., Ltd

Advantages: Hubei XinRunde Chemical Co., Ltd is a renowned pharmaceutical manufacturer. We can offer high quality products at competitive price in quick delivery with 100% custom pass guaranteed. Never stop striving to offer our best s

99% Chloramphenicol 56-75-7 Antibacterial Antibiotic

Cas:56-75-7

Min.Order:10 Gram

Negotiable

Type:Other

inquiry

Shanghai Upbio Tech Co.,Ltd

1,In No Less ten years exporting experience. 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Onchem specialized in APIs, chemical intermedi

Top Suplier Chloramphenicol 99%

Cas:56-75-7

Min.Order:1 Kilogram

FOB Price: $10.0

Type:Lab/Research institutions

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

Qingdao Beluga Import and Export Co., LTD

chloramphenicol CAS:56-75-7 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 organic intermediat

chloramphenicol CAS:56-75-7

Cas:56-75-7

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

dichloroacetic acid methyl ester
116-54-1

dichloroacetic acid methyl ester

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
In methanol at 23 - 40℃; for 9h; Inert atmosphere;97%
at 90℃; for 1h;80%
Amidation;74%
2,2-dichloro-N-[1-hydroxymethyl-2-methoxy-2-(4-nitrophenyl)-ethyl]-acetamide
912296-93-6

2,2-dichloro-N-[1-hydroxymethyl-2-methoxy-2-(4-nitrophenyl)-ethyl]-acetamide

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With boron tribromide In dichloromethane at -20℃; for 12h;80%
diphenylmethyl (2S,3R)-2-(2,2-dichloroacetamido)-3-hydroxy-3-(4-nitrophenyl)propanoate

diphenylmethyl (2S,3R)-2-(2,2-dichloroacetamido)-3-hydroxy-3-(4-nitrophenyl)propanoate

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With sodium tetrahydroborate In methanol at 0℃; for 1h; Inert atmosphere;80%
dichloroacetic acid methyl ester
116-54-1

dichloroacetic acid methyl ester

(4R,5R)-5-(4-nitrophenyl)-4-hydroxymethyl-1,3-oxazolidin-2-one
294637-52-8

(4R,5R)-5-(4-nitrophenyl)-4-hydroxymethyl-1,3-oxazolidin-2-one

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
Stage #1: (4R,5R)-5-(4-nitrophenyl)-4-hydroxymethyl-1,3-oxazolidin-2-one With sodium hydroxide In methanol; water at 25℃;
Stage #2: dichloroacetic acid methyl ester at 90℃; for 3h;
78%
Stage #1: (4R,5R)-5-(4-nitrophenyl)-4-hydroxymethyl-1,3-oxazolidin-2-one With sodium hydroxide In water for 0.5h; Reflux;
Stage #2: dichloroacetic acid methyl ester In water at 90℃; for 3h;
70%
(2S)-(2,2-dichloroacetylamino)-(3R)-hydroxy-3-(4-nitrophenyl)-propionic acid ethyl ester
382142-89-4

(2S)-(2,2-dichloroacetylamino)-(3R)-hydroxy-3-(4-nitrophenyl)-propionic acid ethyl ester

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With sodium tetrahydroborate In methanol at 0℃; for 0.5h;74%
dichloroacetonitrile
3018-12-0

dichloroacetonitrile

(αR,2R)-α-(4-nitrophenyl)oxiranemethanol

(αR,2R)-α-(4-nitrophenyl)oxiranemethanol

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
Stage #1: dichloroacetonitrile; (αR,2R)-α-(4-nitrophenyl)oxiranemethanol With sodium hydride In dichloromethane at 0 - 20℃; for 1h;
Stage #2: With boron trifluoride diethyl etherate In dichloromethane at -78 - 20℃; for 3h;
71%
chloramphenicol
123410-34-4

chloramphenicol

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With dimethylsulfide borane complex In tetrahydrofuran for 16h; Ambient temperature;70%
dichloroacethyl chloride
79-36-7

dichloroacethyl chloride

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With dichloro-acetic acid und anschliessend mit wss.Aceton bei pH8-9;
chloral hydrate
302-17-0

chloral hydrate

potassium cyanide
151-50-8

potassium cyanide

chloramphenicol
56-75-7

chloramphenicol

pentachloroacetone
1768-31-6

pentachloroacetone

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With 1,4-dioxane
bis-dichloroacetyl-amine
13916-40-0

bis-dichloroacetyl-amine

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With ethanol
dichloroacetyl-phosphorous acid diethyl ester
872302-03-9

dichloroacetyl-phosphorous acid diethyl ester

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With methanol
With ethyl acetate
ethyl dichloroacidimidate hydrochloride

ethyl dichloroacidimidate hydrochloride

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With ethanol
(1R,2R)-3-dichloroacetoxy-2-(2,2-dichloro-acetylamino)-1-(4-nitro-phenyl)-propan-1-ol
34718-53-1

(1R,2R)-3-dichloroacetoxy-2-(2,2-dichloro-acetylamino)-1-(4-nitro-phenyl)-propan-1-ol

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With acetone
Conditions
ConditionsYield
durch Chromatographie an einer Lactose-Saeule;
With chiral stationary phase derived from aminated silica gel, L-2-(p-toluenesulfonamido)-3-phenylpropionyl chloride and dendrimer In methanol; water at 25℃; Resolution of racemate;
dichloroacetic acid-[(5R)-4c-(4-nitro-phenyl)-2-oxo-[1,3]dioxan-5r-ylamide]
907579-60-6

dichloroacetic acid-[(5R)-4c-(4-nitro-phenyl)-2-oxo-[1,3]dioxan-5r-ylamide]

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With hydrogenchloride
dichloroacetic acid-[(5R)-4c-(4-nitro-phenyl)-2ξ-oxo-2λ4-[1,3,2]dioxathian-5r-ylamide]
115082-34-3

dichloroacetic acid-[(5R)-4c-(4-nitro-phenyl)-2ξ-oxo-2λ4-[1,3,2]dioxathian-5r-ylamide]

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With hydrogenchloride
(1R,2R)-2-(2,2-dichloro-acetylamino)-1-(4-nitro-phenyl)-3-nitryloxy-propan-1-ol
116081-46-0

(1R,2R)-2-(2,2-dichloro-acetylamino)-1-(4-nitro-phenyl)-3-nitryloxy-propan-1-ol

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With methanol; iron(II) ammonium sulfate
With aminosulfonic acid; water; iron(II) sulfate
Conditions
ConditionsYield
ueber das O3-<3-Carboxy-propionyl>-Derivat;
(R)-((R)-2-dichloromethyl-4,5-dihydro-oxazol-4-yl)-(4-nitro-phenyl)-methanol
76738-28-8

(R)-((R)-2-dichloromethyl-4,5-dihydro-oxazol-4-yl)-(4-nitro-phenyl)-methanol

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With acid Hydrolysis;
threo (1R)-acetoxymethoxy-(2R)-dichloroacetamido-3-acetoxy-1-p-nitrophenylpropane
126109-35-1

threo (1R)-acetoxymethoxy-(2R)-dichloroacetamido-3-acetoxy-1-p-nitrophenylpropane

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With ammonium hydroxide In methanol
chloramphenicol Palmitate
530-43-8

chloramphenicol Palmitate

A

chloramphenicol
56-75-7

chloramphenicol

B

1-hexadecylcarboxylic acid
57-10-3

1-hexadecylcarboxylic acid

Conditions
ConditionsYield
With borate buffer pH 7.5; lipase at 37℃; for 5h; Rate constant; also addition of β-cyclodextrin, chloramphenicol or palmitic acid, var. of polymorphic forms;
chloramphenicol palmitate β-cyclodextrin complex

chloramphenicol palmitate β-cyclodextrin complex

A

chloramphenicol
56-75-7

chloramphenicol

B

1-hexadecylcarboxylic acid
57-10-3

1-hexadecylcarboxylic acid

Conditions
ConditionsYield
With borate buffer pH 7.5; lipase at 37℃; for 5h; Rate constant; also addition of chloramphenicol or palmitic acid, var. of polymorphic forms;
N-[2-(tert-butyl-dimethyl-silanyloxy)-1-hydroxymethyl-2-(4-nitro-phenyl)-ethyl]-2,2-dichloro-acetamide

N-[2-(tert-butyl-dimethyl-silanyloxy)-1-hydroxymethyl-2-(4-nitro-phenyl)-ethyl]-2,2-dichloro-acetamide

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With tetrabutyl ammonium fluoride In tetrahydrofuran desilylation;
(1R,2R)-2-<2,2-dichloro-acetylamino>-1-<4-nitro-phenyl>-1,3-bis-nitryloxy-propane

(1R,2R)-2-<2,2-dichloro-acetylamino>-1-<4-nitro-phenyl>-1,3-bis-nitryloxy-propane

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With methanol; iron(II) ammonium sulfate
With aminosulfonic acid; water; iron(II) sulfate
With methanol; iron(II) chloride
(1R,2R)-2-<2,2-dichloro-acetylamino>-1-<4-nitro-phenyl>-3-nitryloxy-propane-1,3-diol

(1R,2R)-2-<2,2-dichloro-acetylamino>-1-<4-nitro-phenyl>-3-nitryloxy-propane-1,3-diol

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With methanol; iron(II) chloride
(2S,3R)-2-<2,2-dichloro-acetylamino>-3-hydroxy-3-<4-nitro-phenyl>-propionic acid-azide

(2S,3R)-2-<2,2-dichloro-acetylamino>-3-hydroxy-3-<4-nitro-phenyl>-propionic acid-azide

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With sodium tetrahydroborate; ethyl acetate
(2S,3R)-2-<2,2-dichloro-acetylamino>-3-hydroxy-3-<4-nitro-phenyl>-propionic acid ethyl ester

(2S,3R)-2-<2,2-dichloro-acetylamino>-3-hydroxy-3-<4-nitro-phenyl>-propionic acid ethyl ester

chloramphenicol
56-75-7

chloramphenicol

Conditions
ConditionsYield
With lithium aluminium tetrahydride; diethyl ether
3-nitro-1-palmitoyl-1H-1,2,4-triazole
1104640-94-9

3-nitro-1-palmitoyl-1H-1,2,4-triazole

chloramphenicol
56-75-7

chloramphenicol

chloramphenicol Palmitate
530-43-8

chloramphenicol Palmitate

Conditions
ConditionsYield
With triethylamine In tetrahydrofuran at 20℃; for 1h; regioselective reaction;100%
chloramphenicol
56-75-7

chloramphenicol

tert-butyldimethylsilyl chloride

tert-butyldimethylsilyl chloride

chloramphenicol
864529-25-9

chloramphenicol

Conditions
ConditionsYield
With 1H-imidazole In dichloromethane for 2h;99%
With 1H-imidazole In N,N-dimethyl-formamide for 19h; Ambient temperature;95%
With dmap; triethylamine In dichloromethane
vinyl palmitate
693-38-9

vinyl palmitate

chloramphenicol
56-75-7

chloramphenicol

chloramphenicol Palmitate
530-43-8

chloramphenicol Palmitate

Conditions
ConditionsYield
With palmitic acid imprinted Thermomyces lanuginosus Lypozyme TL 100L lipase nanogel In acetonitrile at 20℃; for 48h; Temperature; Concentration; Reagent/catalyst; Green chemistry; Enzymatic reaction; regioselective reaction;99%
With lipase encapsulated polyacrylamide nanogel In water; acetonitrile at 20℃; for 6h; Reagent/catalyst; Enzymatic reaction;99%
With Novozym 435 In acetonitrile at 20℃; for 3h; Inert atmosphere; Enzymatic reaction; regioselective reaction;91%
chloramphenicol
56-75-7

chloramphenicol

propionyl chloride
79-03-8

propionyl chloride

(1R,2R)-2-[(dichloroacetyl)amino]-1-(4-nitrophenyl)-3-(propanoyloxy)propyl propanoate
1304534-01-7

(1R,2R)-2-[(dichloroacetyl)amino]-1-(4-nitrophenyl)-3-(propanoyloxy)propyl propanoate

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane at 20℃; for 1h; Inert atmosphere;99%
chloramphenicol
56-75-7

chloramphenicol

acetyl chloride
75-36-5

acetyl chloride

(1R,2R)-3-(acetyloxy)-2-[(dichloroacetyl)amino]-1-(4-nitrophenyl)propyl acetate
10318-17-9

(1R,2R)-3-(acetyloxy)-2-[(dichloroacetyl)amino]-1-(4-nitrophenyl)propyl acetate

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane at 20℃; for 1h; Inert atmosphere;99%
chloramphenicol
56-75-7

chloramphenicol

p-toluenesulfonyl chloride
98-59-9

p-toluenesulfonyl chloride

Toluene-4-sulfonic acid (2R,3R)-2-(2,2-dichloro-acetylamino)-3-hydroxy-3-(4-nitro-phenyl)-propyl ester
133227-81-3

Toluene-4-sulfonic acid (2R,3R)-2-(2,2-dichloro-acetylamino)-3-hydroxy-3-(4-nitro-phenyl)-propyl ester

Conditions
ConditionsYield
With pyridine for 2h; Ambient temperature;97%
chloramphenicol
56-75-7

chloramphenicol

Dichlorophenylphosphine
644-97-3

Dichlorophenylphosphine

triethylamine hydrochloride
554-68-7

triethylamine hydrochloride

Conditions
ConditionsYield
With triethylamine In tetrahydrofuran96%
chloramphenicol
56-75-7

chloramphenicol

ortho-xylenyl phosphoryl chloride
49785-01-5

ortho-xylenyl phosphoryl chloride

Chloramphenicol ortho-xylenyl phosphate

Chloramphenicol ortho-xylenyl phosphate

Conditions
ConditionsYield
With 1,2,2,6,6-pentamethylpiperidine; C15H12F6N2O In dichloromethane at 20℃; for 4h; Inert atmosphere;96%
chloramphenicol
56-75-7

chloramphenicol

1,3-bis(2-hydroxy-3-chloropropyl)-6-methyluracil
195963-39-4

1,3-bis(2-hydroxy-3-chloropropyl)-6-methyluracil

C33H38Cl4N6O14

C33H38Cl4N6O14

Conditions
ConditionsYield
With potassium carbonate In methanol at 60℃; for 8h;95%
chloramphenicol
56-75-7

chloramphenicol

[(1R,2R)-2-amino-1-(4-nitrophenyl)propane-1,3-diol] hydrochloride
35530-10-0

[(1R,2R)-2-amino-1-(4-nitrophenyl)propane-1,3-diol] hydrochloride

Conditions
ConditionsYield
With hydrogenchloride In water for 2h; Heating;93%
Multi-step reaction with 2 steps
1: pyridine; dioxane
2: HCl; diethyl ether; dioxane
View Scheme
With hydrogenchloride Heating;
n-dodecanoyl chloride
112-16-3

n-dodecanoyl chloride

chloramphenicol
56-75-7

chloramphenicol

(1R,2R)-2-[(dichloroacetyl)amino]-3-(lauroyloxy)-1-(4-nitrophenyl)propyl laurate
41658-74-6

(1R,2R)-2-[(dichloroacetyl)amino]-3-(lauroyloxy)-1-(4-nitrophenyl)propyl laurate

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane at 20℃; for 1h; Inert atmosphere;93%
vinyl caprate
4704-31-8

vinyl caprate

chloramphenicol
56-75-7

chloramphenicol

(2R,3R)-2-[(dichloroacetyl)amino]-3-hydroxy-3-(4-nitrophenyl)propyl decanoate
1303598-13-1

(2R,3R)-2-[(dichloroacetyl)amino]-3-hydroxy-3-(4-nitrophenyl)propyl decanoate

Conditions
ConditionsYield
With Novozym 435 In acetonitrile at 20℃; for 3h; Inert atmosphere; Enzymatic reaction; regioselective reaction;92%
With lipase cloned from Bacillus amyloliquefaciens In ethanol at 50℃; for 4h; Inert atmosphere; Enzymatic reaction; regioselective reaction;
chloramphenicol
56-75-7

chloramphenicol

chlorophosphoric acid diphenyl ester
2524-64-3

chlorophosphoric acid diphenyl ester

Chloramphenicol diphenyl phosphate

Chloramphenicol diphenyl phosphate

Conditions
ConditionsYield
With 1,2,2,6,6-pentamethylpiperidine; C15H12F6N2O In dichloromethane at 20℃; for 4h; Inert atmosphere;92%
chloramphenicol
56-75-7

chloramphenicol

phenylboronic acid
98-80-6

phenylboronic acid

C17H15BCl2N2O5

C17H15BCl2N2O5

Conditions
ConditionsYield
In acetonitrile at 20℃; for 18h; Inert atmosphere;92%
chloramphenicol
56-75-7

chloramphenicol

n-hexadecanoyl chloride
112-67-4

n-hexadecanoyl chloride

chloramphenicol Palmitate
530-43-8

chloramphenicol Palmitate

Conditions
ConditionsYield
With pyridine In N,N-dimethyl-formamide; toluene at -4 - 5℃; for 4.83333h; Solvent;91.9%
With pyridine
With benzene
With benzene unter Zusatzt von Pyridin;
chloramphenicol
56-75-7

chloramphenicol

acetic anhydride
108-24-7

acetic anhydride

(1R,2R)-3-(acetyloxy)-2-[(dichloroacetyl)amino]-1-(4-nitrophenyl)propyl acetate
10318-17-9

(1R,2R)-3-(acetyloxy)-2-[(dichloroacetyl)amino]-1-(4-nitrophenyl)propyl acetate

Conditions
ConditionsYield
With pyridine at 0 - 20℃;91%
With pyridine
vinyl laurate
2146-71-6

vinyl laurate

chloramphenicol
56-75-7

chloramphenicol

(2R,3R)-2-[(dichloroacetyl)amino]-3-hydroxy-3-(4-nitrophenyl)propyl laurate
16255-46-2

(2R,3R)-2-[(dichloroacetyl)amino]-3-hydroxy-3-(4-nitrophenyl)propyl laurate

Conditions
ConditionsYield
With Novozym 435 In acetonitrile at 20℃; for 4h; Inert atmosphere; Enzymatic reaction; regioselective reaction;91%
With lipase cloned from Bacillus amyloliquefaciens In ethanol at 50℃; for 4h; Inert atmosphere; Enzymatic reaction; regioselective reaction;
chloramphenicol
56-75-7

chloramphenicol

boric acid
11113-50-1

boric acid

C22H20BCl4N4O10(1-)*H(1+)

C22H20BCl4N4O10(1-)*H(1+)

Conditions
ConditionsYield
In acetonitrile at 20℃; for 18h; Inert atmosphere;91%
vinyl acetate
108-05-4

vinyl acetate

chloramphenicol
56-75-7

chloramphenicol

(2R,3R)-2-[(dichloroacetyl)amino]-3-hydroxy-3-(4-nitrophenyl)propyl acetate
10318-16-8

(2R,3R)-2-[(dichloroacetyl)amino]-3-hydroxy-3-(4-nitrophenyl)propyl acetate

Conditions
ConditionsYield
With Novozym 435 In acetonitrile at 20℃; for 3h; Inert atmosphere; Enzymatic reaction; regioselective reaction;90%
With lipase cloned from Bacillus amyloliquefaciens In ethanol at 50℃; for 4h; Inert atmosphere; Enzymatic reaction; regioselective reaction;
vinyl propionate
105-38-4

vinyl propionate

chloramphenicol
56-75-7

chloramphenicol

(2R,3R)-2-[(dichloroacetyl)amino]-3-hydroxy-3-(4-nitrophenyl)propyl propionate
33987-21-2

(2R,3R)-2-[(dichloroacetyl)amino]-3-hydroxy-3-(4-nitrophenyl)propyl propionate

Conditions
ConditionsYield
With immobilised Pseudomonas cepacia lipase PSL-C I In 1,4-dioxane at 30℃; for 6h; Inert atmosphere; Enzymatic reaction; regioselective reaction;90%
With lipase cloned from Bacillus amyloliquefaciens In 1,4-dioxane; ethanol at 50℃; for 8h; Catalytic behavior; Solvent; Temperature; Time; Inert atmosphere; Enzymatic reaction; regioselective reaction;
chloramphenicol
56-75-7

chloramphenicol

acetic anhydride
108-24-7

acetic anhydride

tert-butyldimethylsilyl chloride
18162-48-6

tert-butyldimethylsilyl chloride

(1R,2R)-3-((tert-butyldimethylsilyl)oxy)-2-(2,2-dichloroacetamido)-1-(4-nitrophenyl)propyl acetate
864529-27-1

(1R,2R)-3-((tert-butyldimethylsilyl)oxy)-2-(2,2-dichloroacetamido)-1-(4-nitrophenyl)propyl acetate

Conditions
ConditionsYield
Stage #1: chloramphenicol; tert-butyldimethylsilyl chloride With 1H-imidazole In dichloromethane at 25℃; for 0.5h;
Stage #2: acetic anhydride With triethylamine In dichloromethane at 25℃; for 12h;
90%
chloramphenicol
56-75-7

chloramphenicol

acetone
67-64-1

acetone

dichloroacetic acid-[(5R)-2,2-dimethyl-4c-(4-nitro-phenyl)-[1,3]dioxan-5r-ylamide]
57345-88-7

dichloroacetic acid-[(5R)-2,2-dimethyl-4c-(4-nitro-phenyl)-[1,3]dioxan-5r-ylamide]

Conditions
ConditionsYield
With 4 A molecular sieve; Amberlyst A 15 In tetrahydrofuran for 24h; Ambient temperature;89.3%
chloramphenicol
56-75-7

chloramphenicol

1,3-bis(2-hydroxy-3-chloropropyl)uracil
450347-70-3

1,3-bis(2-hydroxy-3-chloropropyl)uracil

2,2-dichloro-N-{3-[3-(3-{dichloroacetyl-[2-hydroxy-1-hydroxymethyl-2-(4-nitro-phenyl)-ethyl]-amino}-2-hydroxy-propyl)-2,6-dioxo-3,6-dihydro-2H-pyrimidin-1-yl]-2-hydroxy-propyl}-N-[2-hydroxy-1-hydroxymethyl-2-(4-nitro-phenyl)-ethyl]-acetamide

2,2-dichloro-N-{3-[3-(3-{dichloroacetyl-[2-hydroxy-1-hydroxymethyl-2-(4-nitro-phenyl)-ethyl]-amino}-2-hydroxy-propyl)-2,6-dioxo-3,6-dihydro-2H-pyrimidin-1-yl]-2-hydroxy-propyl}-N-[2-hydroxy-1-hydroxymethyl-2-(4-nitro-phenyl)-ethyl]-acetamide

Conditions
ConditionsYield
With potassium carbonate In methanol at 60℃; for 8h;87%
chloramphenicol
56-75-7

chloramphenicol

propionic acid anhydride
123-62-6

propionic acid anhydride

A

(1R,2R)-2-[(dichloroacetyl)amino]-1-(4-nitrophenyl)-3-(propanoyloxy)propyl propanoate
1304534-01-7

(1R,2R)-2-[(dichloroacetyl)amino]-1-(4-nitrophenyl)-3-(propanoyloxy)propyl propanoate

B

(2R,3R)-2-[(dichloroacetyl)amino]-3-hydroxy-3-(4-nitrophenyl)propyl propionate
33987-21-2

(2R,3R)-2-[(dichloroacetyl)amino]-3-hydroxy-3-(4-nitrophenyl)propyl propionate

Conditions
ConditionsYield
With pyridine; dmap In dichloromethane for 0.0833333h;A 15%
B 85%
chloramphenicol
56-75-7

chloramphenicol

butyryl chloride
141-75-3

butyryl chloride

A

1,3-dibutanoylchloramphenicol

1,3-dibutanoylchloramphenicol

B

threo-(1R,2R)-1-(4-nitrophenyl)-2-(dichloroacetamido)-1,3-propanediol 3-butanoate
59005-99-1

threo-(1R,2R)-1-(4-nitrophenyl)-2-(dichloroacetamido)-1,3-propanediol 3-butanoate

Conditions
ConditionsYield
With pyridine; dmap In dichloromethane for 0.0833333h;A 15%
B 85%
chloramphenicol
56-75-7

chloramphenicol

meta-hydroxybenzaldehyde
100-83-4

meta-hydroxybenzaldehyde

2,2-Dichloro-N-[(4R,5R)-2-(3-hydroxy-phenyl)-4-(4-nitro-phenyl)-[1,3]dioxan-5-yl]-acetamide
97889-44-6

2,2-Dichloro-N-[(4R,5R)-2-(3-hydroxy-phenyl)-4-(4-nitro-phenyl)-[1,3]dioxan-5-yl]-acetamide

Conditions
ConditionsYield
With 4 A molecular sieve; Amberlyst A 15 In tetrahydrofuran for 24h; Ambient temperature;82%
succinic acid anhydride
108-30-5

succinic acid anhydride

chloramphenicol
56-75-7

chloramphenicol

threo-(1R,2R)-1-(4-nitrophenyl)-2-(dichloroacetamido)-1,3-propanediol 3-succinate
3544-94-3

threo-(1R,2R)-1-(4-nitrophenyl)-2-(dichloroacetamido)-1,3-propanediol 3-succinate

Conditions
ConditionsYield
With triethylamine In tetrahydrofuran at 0℃; Reagent/catalyst;81%
In 1,4-dioxane at 20℃; for 24h; lipase;64%
With 1,4-dioxane; pyridine
chloramphenicol
56-75-7

chloramphenicol

n-decanoyl chloride
112-13-0

n-decanoyl chloride

(1R,2R)-3-(decanoyloxy)-2-[(dichloroacetyl)amino]-1-(4-nitrophenyl)propyl decanoate
1303598-17-5

(1R,2R)-3-(decanoyloxy)-2-[(dichloroacetyl)amino]-1-(4-nitrophenyl)propyl decanoate

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane at 20℃; for 1h; Inert atmosphere;80%
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