cephalexin and its Impurities

Cephalexin is also spelled cephalexin. It can treat a number of bacterial infections including: otitis media, streptococcal pharyngitis, bone and joint infections, pneumonia, cellulitis, and urinary tract infections.. Reference standards of Cephalexin API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below

Displaying 52 results for cephalexin Impurities
PA 56 26000

Cephalexin

Cephalexin

  • Catalogue No.:PA 56 26000

  • CAS :

    15686-71-2

  • Molecular Formula : C16H17N3O4S

  • Molecular Weight : 347.39

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PA 56 26520

7-(2-Amino-2-(4-chlorophenyl)acetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

7-(2-Amino-2-(4-chlorophenyl)acetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

  • Catalogue No.:PA 56 26520

  • CAS :

    NA

  • Molecular Formula : C16H16ClN3O4S

  • Molecular Weight : 381.83

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PA 03 35010

Cephalexin - Impurity A

D-Phenylglycine

  • Catalogue No.:PA 03 35010

  • CAS :

    875-74-1

  • Molecular Formula : C8H9NO2

  • Molecular Weight : 151.16

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PA 03 35020

Cephalexin - Impurity B

7-Aminodesacetoxycephalosporanic Acid

  • Catalogue No.:PA 03 35020

  • CAS :

    22252-43-3

  • Molecular Formula : C8H10N2O3S

  • Molecular Weight : 214.24

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PA 03 35030

Cephalexin - Impurity C

D-Phenylglycyl Cephalexin

  • Catalogue No.:PA 03 35030

  • CAS :

    72528-40-6

  • Molecular Formula : C24H24N4O5S

  • Molecular Weight : 480.54

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PA 03 35040

Cephalexin - Impurity D

3-Hydroxy-4-methyl-2(5H)-thiophenone

  • Catalogue No.:PA 03 35040

  • CAS :

    34876-35-2

  • Molecular Formula : C5H6O2S

  • Molecular Weight : 130.16

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PA 03 35050

Cephalexin - Impurity E

7-ADCA Pivalamide

  • Catalogue No.:PA 03 35050

  • CAS :

    146794-70-9

  • Molecular Formula : C13H18N2O4S

  • Molecular Weight : 298.36

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PA 03 35060

Cephalexin - Impurity F

Delta-2-cephalexin

  • Catalogue No.:PA 03 35060

  • CAS :

    79750-46-2

  • Molecular Formula : C16H17N3O4S

  • Molecular Weight : 347.39

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PA 03 35510

(6R,7R)-7-[[(2R)-2-Amino-2-phenylacetyl]amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-[(2r)-2-phenylacetic acid] Carboxamide

(6R,7R)-7-[[(2R)-2-Amino-2-phenylacetyl]amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-[(2r)-2-phenylacetic acid] Carboxamide

  • Catalogue No.:PA 03 35510

  • CAS :

    NA

  • Molecular Formula : C24H24N4O5S

  • Molecular Weight : 480.54

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PA 03 35520

Cephalexin Diketopiperazine

Cephalexin Diketopiperazine

  • Catalogue No.:PA 03 35520

  • CAS :

    59865-11-1

  • Molecular Formula : C16H17N3O4S

  • Molecular Weight : 347.39

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PA 03 35530

Cephalexin R-Sulfoxide

Cephalexin R-Sulfoxide

  • Catalogue No.:PA 03 35530

  • CAS :

    52210-38-5

  • Molecular Formula : C16H17N3O5S

  • Molecular Weight : 363.39

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PA 03 35540

Cephalexin S-Sulfoxide

Cephalexin S-Sulfoxide

  • Catalogue No.:PA 03 35540

  • CAS :

    74708-55-7

  • Molecular Formula : C16H17N3O5S

  • Molecular Weight : 363.39

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PA 03 35550

Cephalexin Ethyl Homolog

Cephalexin Ethyl Homolog

  • Catalogue No.:PA 03 35550

  • CAS :

    36114-06-4

  • Molecular Formula : C17H19N3O4S

  • Molecular Weight : 361.42

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PA 03 35551

DL-2-Phenylglycine

DL-2-Phenylglycine

  • Catalogue No.:PA 03 35551

  • CAS :

    2835-06-5

  • Molecular Formula : C8H9NO2

  • Molecular Weight : 151.16

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PA 03 35570

Cephalexin Diketopiperazine Monoacid (Mixture of Diastereomers)

Cephalexin Diketopiperazine Monoacid (Mixture of Diastereomers)

  • Catalogue No.:PA 03 35570

  • CAS :

    1323247-65-9

  • Molecular Formula : C16H19N3O5S

  • Molecular Weight : 365.4

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PA STI 010930

α-(Benzoylamino)benzeneacetamide-d10

α-(Benzoylamino)benzeneacetamide-d10

  • Catalogue No.:PA STI 010930

  • CAS :

    1246814-47-0

  • Molecular Formula : C15H4D10N2O2

  • Molecular Weight : 264.35

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PA STI 018640

Cephalexin-d5 Hydrate

Cephalexin-d5 Hydrate

  • Catalogue No.:PA STI 018640

  • CAS :

    NA

  • Molecular Formula : C16H14D5N3O5S

  • Molecular Weight : 370.43

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PA STI 038840

Ethyl Benzoylformate-d5

Ethyl Benzoylformate-d5

  • Catalogue No.:PA STI 038840

  • CAS :

    1025892-26-5

  • Molecular Formula : C10H5D5O3

  • Molecular Weight : 183.22

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PA STI 073070

D-(-)-2-Phenylglycine Cephalexinate-d5

D-(-)-2-Phenylglycine Cephalexinate-d5

  • Catalogue No.:PA STI 073070

  • CAS :

    NA

  • Molecular Formula : C24H19D5N4O5S

  • Molecular Weight : 485.57

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PA STI 073080

D-Phenylglycyl Cephalexin-d5

D-Phenylglycyl Cephalexin-d5

  • Catalogue No.:PA STI 073080

  • CAS :

    NA

  • Molecular Formula : C24H19D5N4O5S

  • Molecular Weight : 485.57

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PA STI 073100

2-[N-(D-Phenylglycine-d5)]crotonic Acid Ethyl Ester Potassium Salt

2-[N-(D-Phenylglycine-d5)]crotonic Acid Ethyl Ester Potassium Salt

  • Catalogue No.:PA STI 073100

  • CAS :

    NA

  • Molecular Formula : C14H11D5KNO4

  • Molecular Weight : 306.41

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PA USP1099008

Cephalexin (1099008)

Cephalexin (1099008)

  • Catalogue No.:PA USP1099008

  • CAS :

    23325-78-2

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA USP1099041

Cephalexin Related Compound D (3-Hydroxy-4-methylthiophen-2(5H)-one) (1099041)

Cephalexin Related Compound D (3-Hydroxy-4-methylthiophen-2(5H)-one) (1099041)

  • Catalogue No.:PA USP1099041

  • CAS :

    34876-35-2

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA USP1099063

Cephalexin Related Compound F ((6R,7R)-7-[(R)-2-Amino-2-phenylacetamido]-3-methyl-8-oxo-5-thia-1-az (1099063)

Cephalexin Related Compound F ((6R,7R)-7-[(R)-2-Amino-2-phenylacetamido]-3-methyl-8-oxo-5-thia-1-az (1099063)

  • Catalogue No.:PA USP1099063

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA 56 26530

Cephalexin Dimer

Cephalexin Dimer

  • Catalogue No.:PA 56 26530

  • CAS :

    NA

  • Molecular Formula : C32H32N6O7S2

  • Molecular Weight : 676.76

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PA IPIPRS 193 12

Cephalexin (IPRS/193/12)-from IPC

  • Catalogue No.:PA IPIPRS 193 12

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

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PA 56 26540

Δ-2-7-Aminodesacetoxycephalosporanic Acid

Δ-2-7-Aminodesacetoxycephalosporanic Acid

  • Catalogue No.:PA 56 26540

  • CAS :

    56487-68-4

  • Molecular Formula : C8H10N2O3S

  • Molecular Weight : 214.24

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PA 03 35580

Cephalexin Diketopiperazine Hydrochloride

Cephalexin Diketopiperazine Hydrochloride

  • Catalogue No.:PA 03 35580

  • CAS :

    NA

  • Molecular Formula : C16H18ClN3O4S

  • Molecular Weight : 383.85

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PAI 03 029010

(6R,7R)-7-Amino-3-ethyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

(6R,7R)-7-Amino-3-ethyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

  • Catalogue No.:PAI 03 029010

  • CAS :

    36114-15-5

  • Molecular Formula : C9H12N2O3S

  • Molecular Weight : 228.27

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PAI 03 029020

Sodium (R,E)-2-((4-methoxy-4-oxobut-2-en-2-yl)amino)-2-phenylacetate

Sodium (R,E)-2-((4-methoxy-4-oxobut-2-en-2-yl)amino)-2-phenylacetate

  • Catalogue No.:PAI 03 029020

  • CAS :

    NA

  • Molecular Formula : C13H14NNaO4

  • Molecular Weight : 271.25

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PAI 03 029030

(6R,7R)-7-((R)-2-Amino-2-phenylacetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

(6R,7R)-7-((R)-2-Amino-2-phenylacetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

  • Catalogue No.:PAI 03 029030

  • CAS :

    33747-86-3

  • Molecular Formula : C17H17N3O4S

  • Molecular Weight : 359.4

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PA 56 0261000

Cefalexin Delactam Dimer

Cefalexin Delactam Dimer

  • Catalogue No.:PA 56 0261000

  • CAS :

    NA

  • Molecular Formula : C32H34N6O8S2

  • Molecular Weight : 694.78

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PAI 03 029031

Sodium (E)-2-((4-ethoxy-4-oxobut-2-en-2-yl)amino)-2-phenylacetate

Sodium (E)-2-((4-ethoxy-4-oxobut-2-en-2-yl)amino)-2-phenylacetate

  • Catalogue No.:PAI 03 029031

  • CAS :

    NA

  • Molecular Formula : C14H16NNaO4

  • Molecular Weight : 285.27

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PAI 03 029032

7-(2-Amino-2-phenylacetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

7-(2-Amino-2-phenylacetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

  • Catalogue No.:PAI 03 029032

  • CAS :

    NA

  • Molecular Formula : C17H17N3O4S

  • Molecular Weight : 359.4

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PA 56 0261001

2-(1-Amino-2-(((R)-carboxy(phenyl)methyl)amino)-2-oxoethyl)-5-methyl-3,6-dihydro-2H-1,3-thiazine-4-carboxylic Acid

2-(1-Amino-2-(((R)-carboxy(phenyl)methyl)amino)-2-oxoethyl)-5-methyl-3,6-dihydro-2H-1,3-thiazine-4-carboxylic Acid

  • Catalogue No.:PA 56 0261001

  • CAS :

    2820348-60-3

  • Molecular Formula : C16H19N3O5S

  • Molecular Weight : 365.4

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PA IPRS 21 16

Cephalexin (IPRS/21/16)

Cephalexin (IPRS/21/16) -from IPC

  • Catalogue No.:PA IPRS 21 16

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA 56 0261004

Cephalexin sulfoxide

Cephalexin sulfoxide

  • Catalogue No.:PA 56 0261004

  • CAS :

    56193-21-6

  • Molecular Formula : C16H17N3O5S

  • Molecular Weight : 363.39

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PA 56 0261003

L-Cephalexin

L-Cephalexin

  • Catalogue No.:PA 56 0261003

  • CAS :

    34632-04-7

  • Molecular Formula : C16H17N3O4S

  • Molecular Weight : 347.39

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PA 56 0261005

Cephradine

Cephradine

  • Catalogue No.:PA 56 0261005

  • CAS :

    38821-53-3

  • Molecular Formula : C16H19N3O4S

  • Molecular Weight : 349.41

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PA 56 0261006

Cephalexin Open-Ring Impurity

Cephalexin Open-Ring Impurity

  • Catalogue No.:PA 56 0261006

  • CAS :

    NA

  • Molecular Formula : C16H19N3O5S

  • Molecular Weight : 365.4

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PAI 03 029033

tert-Butoxycarbonylcephalexin

tert-Butoxycarbonylcephalexin

  • Catalogue No.:PAI 03 029033

  • CAS :

    28180-92-9

  • Molecular Formula : C21H25N3O6S

  • Molecular Weight : 447.51

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PAI 03 029034

(6R,7R)-7-((R)-2-((tert-Butoxycarbonyl)amino)-2-phenylacetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylic Acid

(6R,7R)-7-((R)-2-((tert-Butoxycarbonyl)amino)-2-phenylacetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylic Acid

  • Catalogue No.:PAI 03 029034

  • CAS :

    NA

  • Molecular Formula : C21H25N3O6S

  • Molecular Weight : 447.51

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PA 56 0261007

(6R,7R)-7-((R)-2-((R)-2-((R)-2-Amino-2-phenylacetamido)-2-phenylacetamido)-2-phenylacetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

(6R,7R)-7-((R)-2-((R)-2-((R)-2-Amino-2-phenylacetamido)-2-phenylacetamido)-2-phenylacetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

  • Catalogue No.:PA 56 0261007

  • CAS :

    NA

  • Molecular Formula : C32H31N5O6S

  • Molecular Weight : 613.69

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PA 56 0261008

Cephalexin Chloro Impurity

Cephalexin Chloro Impurity

  • Catalogue No.:PA 56 0261008

  • CAS :

    22039-59-4

  • Molecular Formula : C16H16ClN3O4S

  • Molecular Weight : 381.83

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PA 56 0261009

Cephalosporanic Acid G

Cephalosporanic Acid G

  • Catalogue No.:PA 56 0261009

  • CAS :

    27255-72-7

  • Molecular Formula : C16H16N2O4S

  • Molecular Weight : 332.37

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PA 56 0261010

delta4-Cephalexin Diketopiperazine

delta4-Cephalexin Diketopiperazine

  • Catalogue No.:PA 56 0261010

  • CAS :

    65870-52-2

  • Molecular Formula : C16H17N3O4S

  • Molecular Weight : 347.39

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PA 56 0260061

Cephalexin - Impurity F (Dihydrate Salt)

Delta-2-cefalexin Dihydrate

  • Catalogue No.:PA 56 0260061

  • CAS :

    NA

  • Molecular Formula : C16H21N3O6S

  • Molecular Weight : 383.42

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PA 56 0261011

(6R,7R)-7-Amino-3-methoxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

(6R,7R)-7-Amino-3-methoxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

  • Catalogue No.:PA 56 0261011

  • CAS :

    51803-38-4

  • Molecular Formula : C8H10N2O4S

  • Molecular Weight : 230.24

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PA 56 0261012

2-(1-Amino-2-((carboxy(phenyl)methyl)amino)-2-oxoethyl)-5-methyl-3-nitroso-3,6-dihydro-2H-1,3-thiazine-4-carboxylic Acid

2-(1-Amino-2-((carboxy(phenyl)methyl)amino)-2-oxoethyl)-5-methyl-3-nitroso-3,6-dihydro-2H-1,3-thiazine-4-carboxylic Acid

  • Catalogue No.:PA 56 0261012

  • CAS :

    NA

  • Molecular Formula : C16H18N4O6S

  • Molecular Weight : 394.4

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PA 56 0261013

2-(3,6-Dioxo-5-phenylpiperazin-2-yl)-5-methyl-3-nitroso-3,6-dihydro-2H-1,3-thiazine-4-carboxylic Acid

2-(3,6-Dioxo-5-phenylpiperazin-2-yl)-5-methyl-3-nitroso-3,6-dihydro-2H-1,3-thiazine-4-carboxylic Acid

  • Catalogue No.:PA 56 0261013

  • CAS :

    NA

  • Molecular Formula : C16H16N4O5S

  • Molecular Weight : 376.39

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PA 56 0261014

(6R,7R)-7-Amino-3-(hydroxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylic Acid

(6R,7R)-7-Amino-3-(hydroxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylic Acid

  • Catalogue No.:PA 56 0261014

  • CAS :

    2922677-22-1

  • Molecular Formula : C8H10N2O4S

  • Molecular Weight : 230.24

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PA 56 0261015

Deacetylcephalosporin C

Deacetylcephalosporin C

  • Catalogue No.:PA 56 0261015

  • CAS :

    1476-46-6

  • Molecular Formula : C14H19N3O7S

  • Molecular Weight : 373.38

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CPHI INDIA- 28, 30 November