Cefalexin

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Pharmaceutical Reference Standards

Cefalexin Impurity 1

CAT. No.	CP-C150010
CAS. No.	65870-51-1
Mol. F.	C11H11N3O2
Mol. Wt.	217.23
Stock Status:	Custom Synthesis

Cefalexin

CAT. No.	CP-C159000
CAS. No.	15686-71-2
Mol. F.	C16H17N3O4S
Mol. Wt.	347.39
Stock Status:	Custom Synthesis

Cefalexin EP Impurity A

CAT. No.	CP-C159001
CAS. No.	875-74-1
Mol. F.	C8H9NO2
Mol. Wt.	151.16
Stock Status:	Custom Synthesis

Rel. Cas No: 23325-78-2 (hydrate) ; 25705-52-6 (HCl salt) ; 56337-83-8 (Na salt) ; 37661-32-8 (K salt) ; 91224-38-3 (Sulfate salt)

Cefalexin EP Impurity B

CAT. No.	CP-C159002
CAS. No.	22252-43-3
Mol. F.	C8H10N2O3S
Mol. Wt.	214.24
Stock Status:	In Stock

Rel. Cas No: 111696-41-4 (HCl salt) ; 56871-82-0 (Na salt)

Cefalexin EP Impurity C

CAT. No.	CP-C159003
CAS. No.	72528-40-6
Mol. F.	C24H24N4O5S
Mol. Wt.	480.54
Stock Status:	Custom Synthesis

Cefalexin Monohydrate

CAT. No.	CP-C159004
CAS. No.	23325-78-2
Mol. F.	C16H17N3O4S : H2O
Mol. Wt.	347.39 : 18.0
Stock Status:	Custom Synthesis

Rel. Cas No: 15686-71-2 (free base)

Cefalexin EP Impurity E

CAT. No.	CP-C159005
CAS. No.	146794-70-9
Mol. F.	C13H18N2O4S
Mol. Wt.	298.36
Stock Status:	Custom Synthesis

Cefalexin EP Impurity F

CAT. No.	CP-C159006
CAS. No.	79750-46-2
Mol. F.	C16H17N3O4S
Mol. Wt.	347.39
Stock Status:	Custom Synthesis

Cefalexin Diketopiperazine

CAT. No.	CP-C159007
CAS. No.	59865-11-1
Mol. F.	C16H17N3O4S
Mol. Wt.	347.39
Stock Status:	Custom Synthesis

Cefalexin S-Sulfoxide

CAT. No.	CP-C159008
CAS. No.	74708-55-7
Mol. F.	C16H17N3O5S
Mol. Wt.	363.39
Stock Status:	Custom Synthesis

Cefalexin R-Sulfoxide

CAT. No.	CP-C159009
CAS. No.	52210-38-5
Mol. F.	C16H17N3O5S
Mol. Wt.	363.39
Stock Status:	Custom Synthesis

(RS)-2-Phenylglycine

CAT. No.	CP-C159010
CAS. No.	2835-06-5
Mol. F.	C8H9NO2
Mol. Wt.	151.17
Stock Status:	Custom Synthesis

Cephalexin Chloro Impurity

CAT. No.	CP-C159011
CAS. No.	22039-59-4
Mol. F.	C16H16ClN3O4S
Mol. Wt.	381.83
Stock Status:	Custom Synthesis

Cefalexin Impurity 6

CAT. No.	CP-C159012
CAS. No.	27255-72-7
Mol. F.	C16H16N2O4S
Mol. Wt.	332.37
Stock Status:	Custom Synthesis

Rel. Cas No: 39647-23-9 (sodium salt) ; 34708-38-8 (potassium salt)

a b c d e f g h i j k l m n o p q r s t u v w x y z

Cefalexin

Pharmaceutical Reference Standards

Cefalexin Impurity 1

Cefalexin

Cefalexin EP Impurity A

Cefalexin EP Impurity B

Cefalexin EP Impurity C

Cefalexin Monohydrate

Cefalexin EP Impurity E

Cefalexin EP Impurity F

Cefalexin Diketopiperazine

Cefalexin S-Sulfoxide

Cefalexin R-Sulfoxide

(RS)-2-Phenylglycine

Cephalexin Chloro Impurity

Cefalexin Impurity 6

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