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C0857

Sigma-Aldrich

Chloramphenicol

meets USP testing specifications

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Synonym(s):
D-(−)-threo-2,2-Dichloro-N-[β-hydroxy-α-(hydroxymethyl)-β-(4-nitrophenyl)ethyl]acetamide, D-(−)-threo-2-Dichloroacetamido-1-(4-nitrophenyl)-1,3-propanediol, D-threo-2,2-Dichloro-N-[β-hydroxy-α-(hydroxymethyl)-4-nitrophenethyl]acetamide, Chloromycetin
Linear Formula:
Cl2CHCONHCH(CH2OH)CH(OH)C6H4NO2
CAS Number:
Molecular Weight:
323.13
Beilstein/REAXYS Number:
2225532
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

agency

USP/NF
meets USP testing specifications

Quality Level

assay

97.0-103.0%

form

crystalline

mp

148-150 °C (lit.)

solubility

H2O: insoluble 100% (practically)

antibiotic activity spectrum

viruses

application(s)

pharmaceutical (small molecule)

mode of action

protein synthesis | interferes

SMILES string

OC[C@@H](NC(=O)C(Cl)Cl)[C@H](O)c1ccc(cc1)[N+]([O-])=O

InChI

1S/C11H12Cl2N2O5/c12-10(13)11(18)14-8(5-16)9(17)6-1-3-7(4-2-6)15(19)20/h1-4,8-10,16-17H,5H2,(H,14,18)/t8-,9-/m1/s1

InChI key

WIIZWVCIJKGZOK-RKDXNWHRSA-N

Gene Information

human ... CYP1A2(1544)

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1 of 4

This Item
C7795110700431667
vibrant-m

C0857

Chloramphenicol

vibrant-m

C7795

Chloramphenicol

vibrant-m

1107004

Chloramphenicol

vibrant-m

31667

Chloramphenicol

mode of action

protein synthesis | interferes

mode of action

protein synthesis | interferes

mode of action

-

mode of action

-

Quality Level

300

Quality Level

200

Quality Level

-

Quality Level

100

mp

148-150 °C (lit.)

mp

148-150 °C (lit.)

mp

148-150 °C (lit.)

mp

148-150 °C (lit.)

Gene Information

human ... CYP1A2(1544)

Gene Information

human ... CYP1A2(1544)

Gene Information

-

Gene Information

-

assay

97.0-103.0%

assay

-

assay

-

assay

≥98% (HPLC)

General description

Chemical structure: phenicole

Application

Chloramphenicol is a synthetic antibiotic, isolated from strains of Streptomyces venezuelae. It is often used for bacterial selection in molecular biology applications at 10-20 μg/mL and as a selection agent for transformed cells containing chloramphenicol reistance genes.

Biochem/physiol Actions

Mode of Action: Chloramphenicol inhibits bacterial protein synthesis by blocking the peptidyl transferase step by binding to the 50S ribosomal subunit and preventing attachment of aminoacyl tRNA to the ribosome. It also inhibits mitochondrial and chloroplast protein synthesis and ribosomal formation of (p)ppGpp, de-pressing rRNA transcription.

Mode of Resistance: Use of chloramphenicol acetyltransferase will acetylate the product and inactivate it.

Antimicrobial Spectrum: This is a broad spectrum antibiotic against gram-positive and gram-negative bacteria, and is used mainly for ophthalmic and veterinary purposes.

Caution

Stock solutions should be stored at 2-8°C and are stable at 37°C for 5 days. Aqueous solutions are neutral and stable over a wide pH range, with 50% hydrolysis occurring after 290 days. Use of a borax buffered solution reduces this number to 14%. Solutions should be protected from light as photochemical decomposition results in a yellowing of the solution. Heating aqueous solutions at 115°C for 30 minutes results in a 10% loss of chloramphenicol.

Preparation Note

Stock solutions can be prepared directly in the vial at any recommended concentration. A solution at 50 mg/mL in ethanol yields a clear, very faint, yellow solution. Degradation of chloramphenicol in aqueous solution is catalyzed by general acids and bases. This rate of degradation is independent of the ionic strength and pH.

pictograms

CorrosionHealth hazard

signalword

Danger

Hazard Classifications

Carc. 2 - Eye Dam. 1 - Repr. 2

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

ppe

Eyeshields, Gloves, type P3 (EN 143) respirator cartridges


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Chloramphenicol Chloramphenicol, CAS 56-75-7, is a synthetic bacteriostatic antibiotic that inhibits the translation of RNA by blocking the peptidyltransferase reaction on ribosomes.

Sigma-Aldrich

220551

Chloramphenicol

Streptomycin sulfate United States Pharmacopeia (USP) Reference Standard

USP

1623003

Streptomycin sulfate

DL-threo-Chloramphenicol-d5 analytical standard

Supelco

41724

DL-threo-Chloramphenicol-d5

Anthony J Brzoska et al.
PloS one, 8(2), e56090-e56090 (2013-02-15)
Members of the genus Acinetobacter have been the focus recent attention due to both their clinical significance and application to molecular biology. The soil commensal bacterium Acinetobacter baylyi ADP1 has been proposed as a model system for molecular and genetic
Uwe Richter et al.
Current biology : CB, 23(6), 535-541 (2013-03-05)
Proliferating cells require coordinated gene expression between the nucleus and mitochondria in order to divide, ensuring sufficient organelle number in daughter cells [1]. However, the machinery and mechanisms whereby proliferating cells monitor mitochondria and coordinate organelle biosynthesis remain poorly understood.
J N de Almeida Júnior et al.
Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases, 20(8), 784-790 (2013-12-21)
Trichosporon spp. have recently emerged as significant human pathogens. Identification of these species is important, both for epidemiological purposes and for therapeutic management, but conventional identification based on biochemical traits is hindered by the lack of updates to the species
David G Kirk et al.
Applied and environmental microbiology, 80(16), 5141-5150 (2014-06-15)
Clostridium botulinum produces heat-resistant endospores that may germinate and outgrow into neurotoxic cultures in foods. Sporulation is regulated by the transcription factor Spo0A and the alternative sigma factors SigF, SigE, SigG, and SigK in most spore formers studied to date.
Chloramphenicol eye drops: a dangerous drug?
J Diamond et al.
The Practitioner, 239(1555), 608-611 (1995-10-01)

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