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Type:Impurity Reference Standard
API NAME:Cefalexin
Total Products: 13
Inv. Status:

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Cefalexin Monohydrate
CAT No: CL-CFX-01 CAS No: 23325-78-2 Mol Wt: 347.4 : 18.0 Mol F: C16H17N3O4S : H2O Inv Status: Custom Synthesis
Chemical Name: (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 monohydrate
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Cefalexin EP Impurity A
CAT No: CL-CFX-02 CAS No:  875-74-1 Mol Wt: 151.2 Mol F: C8H9NO2 Inv Status: In Stock
Chemical Name: (2R)-2-Amino-2-phenylacetic acid
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Cefalexin EP Impurity B
CAT No: CL-CFX-03 CAS No: 22252-43-3 Mol Wt: 214.3 Mol F: C8H10N2O3S Inv Status: Custom Synthesis
Chemical Name: (6R,7R)-7-Amino-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
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Cefalexin EP Impurity C
CAT No: CL-CFX-04 CAS No: 72528-40-6 Mol Wt: 480.5 Mol F: C24H24N4O5S Inv Status: Custom Synthesis
Chemical Name:  (6R,7R)-7-[[(2R)-2-[[(2R)-2-Amino-2-phenylacetyl]amino]-2-phenylacetyl] amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
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Cefalexin EP Impurity D
CAT No: CL-CFX-05 CAS No: 34876-35-2 Mol Wt: 130.2 Mol F: C5H6O2S Inv Status: Custom Synthesis
Chemical Name: 3-Hydroxy-4-methylthiophen-2(5H)-one
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Cefalexin EP Impurity E
CAT No: CL-CFX-06 CAS No: 146794-70-9 Mol Wt: 298.4 Mol F: C13H18N2O4S Inv Status: Custom Synthesis
Chemical Name: (6R,7R)-7-[(2,2-Dimethylpropanoyl)amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
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Cefalexin EP Impurity F
CAT No: CL-CFX-07 CAS No: 79750-46-2 Mol Wt: 347.4 Mol F: C16H17N3O4S Inv Status: Custom Synthesis
Chemical Name: (2RS,6R,7R)-7-[[(2R)-2-amino-2-phenylacetyl]amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylic acid
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Cefalexin Impurity 1
CAT No: CL-CFX-08 CAS No: NA Mol Wt: 365.4 Mol F: C16H19N3O5S Inv Status: Custom Synthesis
Chemical Name: 2-(1-Amino-2-(((R)-carboxy(phenyl)methyl)amino)-2-oxoethyl)-5-methyl-3,6-dihydro-2H-1,3-thiazine-4-carboxylic acid
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Cephalexin
CAT No: CL-CFX-09 CAS No: 15686-71-2 Mol Wt: 347.39 Mol F: C16H17N3O4S Inv Status: In Stock
Chemical Name: (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
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Cefalexin S-Sulfoxide
CAT No: CL-CFX-10 CAS No: 74708-55-7 Mol Wt: 363.4 Mol F: C16H17N3O5S Inv Status: Custom Synthesis
Chemical Name: (5S,6R,7R)-7-((R)-2-amino-2-phenylacetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid 5-oxide
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Cefalexin Amide Impurity
CAT No: CL-CFX-11 CAS No: NA Mol Wt: 346.4 Mol F: C16H18N4O3S Inv Status: Custom Synthesis
Chemical Name: (6R,7R)-7-((R)-2-Amino-2-phenylacetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxamide
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Cefalexin Open-Ring Impurity
CAT No: CL-CFX-12 CAS No: NA Mol Wt: 365.4 Mol F: C16H19N3O5S Inv Status: Custom Synthesis
Chemical Name: 2-(((R)-2-Amino-2-phenylacetamido)(carboxy)methyl)-5-methyl-3,6-dihydro-2H-1,3-thiazine-4-carboxylic acid
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Cephalexin Chloro Impurity
CAT No: CL-CFX-13 CAS No: 22039-59-4 Mol Wt: 381.8 Mol F: C16H16ClN3O4S Inv Status: Custom Synthesis
Chemical Name: (6S, 7S)-7-((S)-2-amino-2-(4-chlorophenyl)acetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

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