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Pharmaceutical Reference Standards

Cefazolin Sodium

Picture of Cefazolin Sodium
CAT No: SZ-C016001
CAS No: 27164-46-1
Mol.F. : C14H13N8NaO4S3
Mol.Wt. : 476.5
Inv. Status: In Stock
Rel. CAS No : 25953-19-9 (free base)
SZ-C016001
CAS No:27164-46-1
Mol.F.: C14H13N8NaO4S3
Mol.Wt.: 476.5
Inv. Status: In Stock
Rel. CAS No : 25953-19-9 (free base)

Cefazolin EP Impurity A

Picture of Cefazolin EP Impurity A
CAT No: SZ-C016002
CAS No: 30246-33-4
Mol.F. : C11H12N4O3S3
Mol.Wt. : 344.4
Inv. Status: In Stock
Rel. CAS No : 66659-21-0 (Na salt) ; 88739-52-0 (K salt) ; 98493-37-9 (HCl salt)
SZ-C016002
CAS No:30246-33-4
Mol.F.: C11H12N4O3S3
Mol.Wt.: 344.4
Inv. Status: In Stock
Rel. CAS No : 66659-21-0 (Na salt) ; 88739-52-0 (K salt) ; 98493-37-9 (HCl salt)

Cefazolin EP Impurity B

Picture of Cefazolin EP Impurity B
CAT No: SZ-C016003
CAS No: 2384108-14-7
Mol.F. : C16H20N4O4S3
Mol.Wt. : 428.5
Inv. Status: In Stock
SZ-C016003
CAS No:2384108-14-7
Mol.F.: C16H20N4O4S3
Mol.Wt.: 428.5
Inv. Status: In Stock

Cefazolin EP Impurity C

Picture of Cefazolin EP Impurity C
CAT No: SZ-C016004
CAS No: 56842-77-4
Mol.F. : C11H12N6O4S
Mol.Wt. : 324.3
Inv. Status: In Stock
Rel. CAS No : 37051-04-0 (Na salt)
SZ-C016004
CAS No:56842-77-4
Mol.F.: C11H12N6O4S
Mol.Wt.: 324.3
Inv. Status: In Stock
Rel. CAS No : 37051-04-0 (Na salt)

Cefazolin EP Impurity D

Picture of Cefazolin EP Impurity D
CAT No: SZ-C016005
CAS No: 32510-61-5
Mol.F. : C13H14N6O6S
Mol.Wt. : 382.4
Inv. Status: In Stock
Rel. CAS No : 27164-45-0 (Na salt) ; 117030-04-3 (K salt)
SZ-C016005
CAS No:32510-61-5
Mol.F.: C13H14N6O6S
Mol.Wt.: 382.4
Inv. Status: In Stock
Rel. CAS No : 27164-45-0 (Na salt) ; 117030-04-3 (K salt)

Cefazolin EP Impurity E

Picture of Cefazolin EP Impurity E
CAT No: SZ-C016006
CAS No: 29490-19-5
Mol.F. : C3H4N2S2
Mol.Wt. : 132.2
Inv. Status: In Stock
Rel. CAS No : 40045-85-0 (Na salt) ; 79929-61-6 (K salt)
SZ-C016006
CAS No:29490-19-5
Mol.F.: C3H4N2S2
Mol.Wt.: 132.2
Inv. Status: In Stock
Rel. CAS No : 40045-85-0 (Na salt) ; 79929-61-6 (K salt)

Cefazolin EP Impurity G (Triethylamine salt)

Picture of Cefazolin EP Impurity G (Triethylamine salt)
CAT No: SZ-C016007
CAS No: NA
Mol.F. : C11H10N6O4S : C6H15N
Mol.Wt. : 322.3 : 101.2
Inv. Status: Out of Stock
Rel. CAS No : 1172998-53-6 (free base)
SZ-C016007
CAS No:NA
Mol.F.: C11H10N6O4S : C6H15N
Mol.Wt.: 322.3 : 101.2
Inv. Status: Out of Stock
Rel. CAS No : 1172998-53-6 (free base)

Cefazolin EP Impurity H

Picture of Cefazolin EP Impurity H
CAT No: SZ-C016008
CAS No: 957-68-6
Mol.F. : C10H12N2O5S
Mol.Wt. : 272.3
Inv. Status: In Stock, 3-4 days for Dispatch
Rel. CAS No : 40994-22-7 (Na salt) ; 53064-81-6 (K salt) ; 57399-61-8 (HCl salt)
SZ-C016008
CAS No:957-68-6
Mol.F.: C10H12N2O5S
Mol.Wt.: 272.3
Inv. Status: In Stock, 3-4 days for Dispatch
Rel. CAS No : 40994-22-7 (Na salt) ; 53064-81-6 (K salt) ; 57399-61-8 (HCl salt)

Cefazolin EP Impurity I

Picture of Cefazolin EP Impurity I
CAT No: SZ-C016009
CAS No: 1675244-99-1
Mol.F. : C14H16N8O5S3
Mol.Wt. : 472.5
Inv. Status: Custom Synthesis
SZ-C016009
CAS No:1675244-99-1
Mol.F.: C14H16N8O5S3
Mol.Wt.: 472.5
Inv. Status: Custom Synthesis

Cefazolin EP Impurity J

Picture of Cefazolin EP Impurity J
CAT No: SZ-C016010
CAS No: 1675245-00-7
Mol.F. : C11H12N6O5S
Mol.Wt. : 340.3
Inv. Status: Custom Synthesis
SZ-C016010
CAS No:1675245-00-7
Mol.F.: C11H12N6O5S
Mol.Wt.: 340.3
Inv. Status: Custom Synthesis

Cefazolin EP Impurity K

Picture of Cefazolin EP Impurity K
CAT No: SZ-C016011
CAS No: 2410652-70-7
Mol.F. : C14H15N9O3S3
Mol.Wt. : 453.5
Inv. Status: Custom Synthesis
SZ-C016011
CAS No:2410652-70-7
Mol.F.: C14H15N9O3S3
Mol.Wt.: 453.5
Inv. Status: Custom Synthesis

Cefazolin EP Impurity L

Picture of Cefazolin EP Impurity L
CAT No: SZ-C016012
CAS No: NA
Mol.F. : C14H14N8O4S3
Mol.Wt. : 454.5
Inv. Status: In Stock
SZ-C016012
CAS No:NA
Mol.F.: C14H14N8O4S3
Mol.Wt.: 454.5
Inv. Status: In Stock

Tetrazolyl Acetamide Diethyl Acetal

Picture of Tetrazolyl Acetamide Diethyl Acetal
CAT No: SZ-C016013
CAS No: 2150044-08-7
Mol.F. : C9H17N5O3
Mol.Wt. : 243.3
Inv. Status: Custom Synthesis
SZ-C016013
CAS No:2150044-08-7
Mol.F.: C9H17N5O3
Mol.Wt.: 243.3
Inv. Status: Custom Synthesis

Cefazolin Impurity (1H-Tetrazole-1-Acetic Acid)

Picture of Cefazolin Impurity (1H-Tetrazole-1-Acetic Acid)
CAT No: SZ-C016014
CAS No: 21732-17-2
Mol.F. : C3H4N4O2
Mol.Wt. : 128.1
Inv. Status: In Stock
Rel. CAS No : 51286-84-1 (Na salt) ; 51286-83-0 (K salt) ; 1222197-07-0 (HCl salt)
SZ-C016014
CAS No:21732-17-2
Mol.F.: C3H4N4O2
Mol.Wt.: 128.1
Inv. Status: In Stock
Rel. CAS No : 51286-84-1 (Na salt) ; 51286-83-0 (K salt) ; 1222197-07-0 (HCl salt)

Cefazolin 3-Hydroxymethyl Impurity

Picture of Cefazolin 3-Hydroxymethyl Impurity
CAT No: SZ-C016015
CAS No: 478494-71-2
Mol.F. : C11H12N6O5S
Mol.Wt. : 340.3
Inv. Status: In Stock
Rel. CAS No : 50971-65-8 (Na salt)
SZ-C016015
CAS No:478494-71-2
Mol.F.: C11H12N6O5S
Mol.Wt.: 340.3
Inv. Status: In Stock
Rel. CAS No : 50971-65-8 (Na salt)

Tetrazolyl Acetamide Acetal

Picture of Tetrazolyl Acetamide Acetal
CAT No: SZ-C016016
CAS No: 1675245-47-2
Mol.F. : C5H9N5O3
Mol.Wt. : 187.2
Inv. Status: Custom Synthesis
SZ-C016016
CAS No:1675245-47-2
Mol.F.: C5H9N5O3
Mol.Wt.: 187.2
Inv. Status: Custom Synthesis

Cefazolin Impurity 1

Picture of Cefazolin Impurity 1
CAT No: SZ-C016017
CAS No: 2416213-67-5
Mol.F. : C18H20N4O8S2
Mol.Wt. : 484.5
Inv. Status: Custom Synthesis
SZ-C016017
CAS No:2416213-67-5
Mol.F.: C18H20N4O8S2
Mol.Wt.: 484.5
Inv. Status: Custom Synthesis

Cefazolin Diethylamide Δ2 Isomer

Picture of Cefazolin Diethylamide Δ2 Isomer
CAT No: SZ-C016018
CAS No: NA
Mol.F. : C18H23N9O3S3
Mol.Wt. : 509.6
Inv. Status: In Stock
SZ-C016018
CAS No:NA
Mol.F.: C18H23N9O3S3
Mol.Wt.: 509.6
Inv. Status: In Stock

Cefazolin Impurity 3

Picture of Cefazolin Impurity 3
CAT No: SZ-C016019
CAS No: NA
Mol.F. : C13H17N3O6S
Mol.Wt. : 343.4
Inv. Status: Custom Synthesis
SZ-C016019
CAS No:NA
Mol.F.: C13H17N3O6S
Mol.Wt.: 343.4
Inv. Status: Custom Synthesis

Cefazolin Impurity 4

Picture of Cefazolin Impurity 4
CAT No: SZ-C016020
CAS No: NA
Mol.F. : C13H17N3O7S
Mol.Wt. : 359.4
Inv. Status: Custom Synthesis
SZ-C016020
CAS No:NA
Mol.F.: C13H17N3O7S
Mol.Wt.: 359.4
Inv. Status: Custom Synthesis

Cefazolin Impurity 5

Picture of Cefazolin Impurity 5
CAT No: SZ-C016021
CAS No: 1797135-60-4
Mol.F. : C5H7N5O2
Mol.Wt. : 169.1
Inv. Status: Custom Synthesis
SZ-C016021
CAS No:1797135-60-4
Mol.F.: C5H7N5O2
Mol.Wt.: 169.1
Inv. Status: Custom Synthesis

Cefazolin

Picture of Cefazolin
CAT No: SZ-C016022
CAS No: 25953-19-9
Mol.F. : C14H14N8O4S3
Mol.Wt. : 454.5
Inv. Status: Custom Synthesis
Rel. CAS No : 27164-46-1 (Sodium salt)
SZ-C016022
CAS No:25953-19-9
Mol.F.: C14H14N8O4S3
Mol.Wt.: 454.5
Inv. Status: Custom Synthesis
Rel. CAS No : 27164-46-1 (Sodium salt)

Cefazolin EP Impurity G

Picture of Cefazolin EP Impurity G
CAT No: SZ-C016023
CAS No: 1172998-53-6
Mol.F. : C11H10N6O4S
Mol.Wt. : 322.3
Inv. Status: In Stock
SZ-C016023
CAS No:1172998-53-6
Mol.F.: C11H10N6O4S
Mol.Wt.: 322.3
Inv. Status: In Stock

Cefazolin Lactone Open Ring

Picture of Cefazolin Lactone Open Ring
CAT No: SZ-C016024
CAS No: NA
Mol.F. : C11H12N6O5S
Mol.Wt. : 340.3
Inv. Status: Custom Synthesis
SZ-C016024
CAS No:NA
Mol.F.: C11H12N6O5S
Mol.Wt.: 340.3
Inv. Status: Custom Synthesis

Cefazolin Delta-2-Isomer

Picture of Cefazolin Delta-2-Isomer
CAT No: SZ-C016025
CAS No: 55390-53-9
Mol.F. : C14H14N8O4S3
Mol.Wt. : 454.5
Inv. Status: Limited Stock
SZ-C016025
CAS No:55390-53-9
Mol.F.: C14H14N8O4S3
Mol.Wt.: 454.5
Inv. Status: Limited Stock

Cefazolin Impurity 7

Picture of Cefazolin Impurity 7
CAT No: SZ-C016043
CAS No: NA
Mol.F. : C11H14N6O6S
Mol.Wt. : 358.3
Inv. Status: Custom Synthesis
SZ-C016043
CAS No:NA
Mol.F.: C11H14N6O6S
Mol.Wt.: 358.3
Inv. Status: Custom Synthesis