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R4408

Sigma-Aldrich

Chloramphenicol

Ready Made Solution, 100 mg/mL in ethanol: isopropanol (95:5), ≥98% (HPLC)

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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
NACRES:
NA.85

Quality Level

Assay

≥98% (HPLC)

form

solution

concentration

100 mg/mL in ethanol: isopropanol (95:5)

antibiotic activity spectrum

Gram-negative bacteria
Gram-positive bacteria

Mode of action

protein synthesis | interferes

shipped in

dry ice

storage temp.

−20°C

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This Item
PHR1412C0378C7795
Sigma-Aldrich

R4408

Chloramphenicol

Supelco

PHR1412

Chloramphenicol

Chloramphenicol ≥98% (HPLC)

C0378

Chloramphenicol

Chloramphenicol γ-irradiated

C7795

Chloramphenicol

Quality Level

200

Quality Level

300

Quality Level

200

Quality Level

200

assay

≥98% (HPLC)

assay

-

assay

≥98% (HPLC)

assay

-

form

solution

form

-

form

powder or crystals

form

powder

concentration

100 mg/mL in ethanol: isopropanol (95:5)

concentration

-

concentration

-

concentration

-

storage temp.

−20°C

storage temp.

-10 to -25°C

storage temp.

room temp

storage temp.

2-8°C

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.

Packaging

10ml

Preparation Note

This product is a ready made solution of 100 mg/mL in ethanol:isopropanol (95:5). It is shipped in dry ice and stored at -20°C.

Other Notes

Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage.Storage class (TRGS 510): Flammable liquids")

Signal Word

Danger

Hazard Classifications

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

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

57.2 °F - closed cup

Flash Point(C)

14.0 °C - closed cup


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