Cephalexin

Cephalexin structural formula

CAS Number15686-71-2
Molecular FormulaC16H17N3O4S
Molecular Weight347.391
InChI KeyZAIPMKNFIOOWCQ-UEKVPHQBSA-N
LogP0.65
Synonyms
  • Cephalexin
  • (6R,7R)-7-{[(2R)-2-Amino-2-phenylacetyl]amino}-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
  • 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-[[(2R)-2-amino-2-phenylacetyl]amino]-3-methyl-8-oxo-, (6R,7R)-
  • 15686-71-2
  • 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-[[(2R)-aminophenylacetyl]amino]-3-methyl-8-oxo-, (6R,7R)-
  • 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-(2-amino-2-phenylacetamido)-3-methyl-8-oxo-, D-
  • 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-[(aminophenylacetyl)amino]-3-methyl-8-oxo-, [6R-[6?,7?(R*)]]-
  • 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-[[(2R)-2-amino-2-phenylacetyl]amino]-3-methyl-8-oxo-, (6R,7R)-
  • 7-(D-?-Amino-?-phenylacetoamido)-3-methyl-3-cephem-4-carboxylic acid
  • 7-(?-Amino-D-phenylacetamido)-3-deacetoxycephalosporanic acid
  • 7-[(Aminophenylacetyl)amino]-3-dimethyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
  • 7-[D-(-)-?-Aminophenylacetamido]-3-methyl-3-cephem-4-carboxylic acid
  • Alcephin
  • Alsporin
  • Carnosporin
  • Cefablan
  • Cefadal
  • Cefadin
  • Cefadina
  • Cefadros
  • Cefadyl
  • Cefaleksin
  • cefalexin
  • cefalexina
  • cefalexine
  • Cefalin
  • Cefaloto
  • Cefanex
  • Cefaseptin
  • Ceforal
  • Cefovit
  • Celexin
  • Cepastar
  • Cepexin
  • Cephacillin
  • Cephalexine
  • CEPHALOSPORANIC ACID, 7-(D-?- AMINOPHENYLACETAMIDO)DESACETOXY-
  • Cephamasten
  • Cephaxin
  • Ceporex
  • Ceporex Forte
  • Ceporexin
  • Ceporexine
  • Cerexin
  • Cophalexin
  • D-Cephalexin
  • Derantel
  • Durantel
  • Durantel DS
  • Ed A-Ceph
  • Efalexin
  • Erocetin
  • Farexin
  • Felexin
  • Garasin
  • Ibrexin
  • Inphalex
  • Iwalexin
  • Kefalex
  • Kefalospes
  • Kefaxin
  • Kefexin
  • Kefloridina
  • Keforal
  • Kekrinal
  • Kidolex
  • Lafarine
  • Lenocef
  • Lexibiotico
  • Lilly 66873
  • L-Keflex
  • Llonexina
  • Lonflex
  • Lopilexin
  • Madlexin
  • Mamalexin
  • Mamlexin
  • Mecilex
  • Medoxine
  • Naxifelar
  • Novolexin
  • Ohlexin
  • Oracocin
  • Oriphex
  • Ospexin
  • Palitrex
  • Pectril
  • Pyassan
  • Rinesal
  • Sanaxin
  • Sencephalin
  • Sepexin
  • Septilisin
  • Servispor
  • Sialexin
  • Sinthecillin
  • Sintolexyn
  • Sporicef
  • Sporidex
  • Taicelexin
  • Tepaxin
  • Tokiolexin
  • Uphalexin
  • 7-(D-2-Amino-2-phenylacetamido)-3-methyl-delta (sup 3)-cephem-4- carboxylic acid
  • 7-(D-2-Amino-2-phenylacetamido)-3-methyl-delta3-cephem-4-carboxylic acid
  • 7-beta-(D-alpha-Amino-alpha-phenylacetylamino)-3-methyl-3-cephem-4-carboxylic acid
  • BRN 0965503
  • Cefa-iskia
  • Cephalexinum
  • Cephanasten
  • EINECS 239-773-6
  • Larixin
  • Neolexina
  • Ortisporina
  • Sartosona
  • (6R,7R)-7-((R)-2-Amino-2-phenylacetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-en-2-carbonsaeure
  • Ceporexin-E
  • Factagard
  • Kefolan
  • Roceph Distab
  • Zozarine
  • Panixine disperdose
  • Cefalessina
  • Cefalexinum
  • UNII-5SFF1W6677
  • Cephalexin anhydrous
  • Optocef
  • (6R,7R)-7-{[(2R)-2-amino-2-phenylacetyl]amino}-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
  • 7-(D-alpha-Aminophenylacetamido)desacetoxycephalosporanic acid
  • 7-beta-(D-alpha-Amino-alpha-phenylacetylamino)-3-methyl-3-cephem-4-carboxylic acid
  • CEX

Applications:

HPLC Separation of β-Lactam Antibiotics such as Amoxicillin and Cephalexin on Primesep 100 Column

March 18, 2021

HPLC Method for Cephalexin, Amoxicillin, Amoxicillin hydrate (1:3) on Primesep 100 by SIELC Technologies

High Performance Liquid Chromatography (HPLC) Method for Analysis of Cephalexin, Amoxicillin, Amoxicillin hydrate (1:3).

Both amoxicillin and cephalexin are beta-lactam antibiotics. Beta-lactam antibiotics contain a beta-lactam ring in their molecular structure. As a group, these drugs are active against many gram-positive, gram-negative and anaerobic organisms. Amoxicillin is a prescription antibiotic with the molecular formula C16H19N3O5S. It is typically used to treat bacterial infections and is taken orally.  Cephalexin has the chemical formula C16H17N3O4S.

Cephalexin, Amoxicillin, Amoxicillin hydrate (1:3) can be retained and baseline separated with an isocratic method in 30/70 Acetonitrile (ACN) and water mobile phase with a Sulfuric acid (H2SO4) buffer. UV detection at 250 nm.

Condition
Column Primesep 100, 4.6 x 100 mm, 5 µm, 100 A, dual ended
Mobile Phase MeCN/H2O
Buffer TFA, H2SO4
Flow Rate 1.0 ml/min
Detection UV, 250 nm

 

Description
Class of Compounds
 Drug, Antibiotics, Hydrophobic, Ionizable
Analyzing Compounds Cephalexin, Amoxicillin, Amoxicillin hydrate (1:3)

 

Application Column

Primesep 100

Column Diameter: 4.6 mm
Column Length: 100 mm
Particle Size: 5 µm
Pore Size: 100 A
Column options: dual ended

Add to cart
Application Analytes:
Amoxicillin
Amoxicillin hydrate (1:3)
Cephalexin
Application Detection:
UV Detection
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.

Separation of Cephalexin on Newcrom R1 HPLC column

May 16, 2018
Separation of Cephalexin on Newcrom R1 HPLC column

Cephalexin can be analyzed by this reverse phase (RP) HPLC method with simple conditions. The mobile phase contains an acetonitrile (MeCN), water, and phosphoric acid. For Mass-Spec (MS) compatible applications the phosphoric acid needs to be replaced with formic acid. Smaller 3 µm particles columns available for fast UPLC applications. This liquid chromatography method is scalable and can be used for isolation impurities in preparative separation. It also suitable for pharmacokinetics.

Application Column

Newcrom R1

The Newcrom columns are a family of reverse-phase-based columns. Newcrom A, AH, B, and BH are all mixed-mode columns with either positive or negative ion-pairing groups attached to either short (25 Å) or long (100 Å) ligand chains. Newcrom R1 is a special reverse-phase column with low silanol activity.

Select options
Application Analytes:
Cephalexin
The result was obtained by a proprietary SIELC algorithm. It may deviate from the actual experimental data. The experimental data are available upon request. Contact us before ordering the column as there may be a more suitable column alternative by either e-mail: support@sielc.com or by phone: 847-229-2629.