Pharmaceutical Reference Standards / Impurity Standards

Cefazolin Sodium
Cefazolin Sodium
  • CAT. No.C980000
  • CAS. No.27164-46-1
  • Mol. F.C14H13N8O4S3Na
  • Mol. W.476.49 g/mol
  • Stock Status:Instock
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Cefazolin
Cefazolin
  • CAT. No.C980000A
  • CAS. No.25953-19-9
  • Mol. F.C14H14N8O4S3
  • Mol. W.454.51 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin EP Impurity E
Cefazolin EP Impurity E
  • CAT. No.C980001
  • CAS. No.29490-19-5
  • Mol. F.C3H4N2S2
  • Mol. W.132.21 g/ mol
  • Stock Status:Instock
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Cefazolin EP Impurity A
Cefazolin EP Impurity A
  • CAT. No.C980002
  • CAS. No.30246-33-4
  • Mol. F.C11H12N4O3S3
  • Mol. W.344.44 g/mol
  • Stock Status:Instock
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Tetrazolylacetic Acid
Tetrazolylacetic Acid
  • CAT. No.C980003
  • CAS. No.21732-17-2
  • Mol. F.C3H4N4O2
  • Mol. W.128.09 g/mol
  • Stock Status:Instock
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Cefazolin EP Impurity L
Cefazolin EP Impurity L
  • CAT. No.C980004
  • CAS. No.NA
  • Mol. F.C14H14N8O4S3
  • Mol. W.454.51 g/mol
  • Stock Status:Limited Stock
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Cefazolin EP Impurity C
Cefazolin EP Impurity C
  • CAT. No.C980005
  • CAS. No.56842-77-4
  • Mol. F.C11H12N6O4S
  • Mol. W.324.32 g/mol
  • Stock Status:Instock
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Cefazolin Pivaloyl
Cefazolin Pivaloyl
  • CAT. No.C980006
  • CAS. No.1798390-48-3
  • Mol. F.C16H20N4O4S3
  • Mol. W.428.55 g/mol
  • Stock Status:Instock
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Tetrazolyl Acetamide Acetal
Tetrazolyl Acetamide Acetal
  • CAT. No.C980007
  • CAS. No.1675245-47-2
  • Mol. F.C5H9N5O3
  • Mol. W.187.16 g/mol
  • Stock Status:Instock
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Cefazolin Open-Ring Lactone
Cefazolin Open-Ring Lactone
  • CAT. No.C980008
  • CAS. No.NA
  • Mol. F.C11H12N6O5S
  • Mol. W.340.06 g/mol
  • Stock Status:Custom Synthesis
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Cefotiam Impurity 8
Cefotiam Impurity 8
  • CAT. No.C980009
  • CAS. No.61607-66-7
  • Mol. F.C13H19N7O3S2
  • Mol. W.385.47 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin EP Impurity G
Cefazolin EP Impurity G
  • CAT. No.C980010
  • CAS. No.1172998-53-6
  • Mol. F.C11H10N6O4S
  • Mol. W.322.30 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin EP Impurity D
Cefazolin EP Impurity D
  • CAT. No.C980011
  • CAS. No.32510-61-5
  • Mol. F.C13H14N6O6S
  • Mol. W.382.35 g/mol
  • Stock Status:Custom Synthesis
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2-methyl-1,3,4-thiadiazole
2-methyl-1,3,4-thiadiazole
  • CAT. No.C980012
  • CAS. No.NA
  • Mol. F.C3H4N2S
  • Mol. W.100.14 g/mol
  • Stock Status:Custom Synthesis
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Acetic acid-2-(dithiocarboxy)hydrazide
Acetic acid-2-(dithiocarboxy)hydrazide
  • CAT. No.C980013
  • CAS. No.NA
  • Mol. F.C3H6N2OS2
  • Mol. W.150.22 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin 3-Hydroxymethyl Impurity
Cefazolin 3-Hydroxymethyl Impurity
  • CAT. No.C980014
  • CAS. No.478494-71-2
  • Mol. F.C11H12N6O5S
  • Mol. W.340.32 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin EP Impurity I
Cefazolin EP Impurity I
  • CAT. No.C980015
  • CAS. No.1675244-99-1
  • Mol. F.C14H16N8O5S3
  • Mol. W.472.51 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin EP Impurity B
Cefazolin EP Impurity B
  • CAT. No.C980016
  • CAS. No.2384108-14-7
  • Mol. F.C16H20N4O4S3
  • Mol. W.428.54 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin EP Impurity J
Cefazolin EP Impurity J
  • CAT. No.C980017
  • CAS. No.1675245-00-7
  • Mol. F.C11H12N6O5S
  • Mol. W.340.31 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin Open-Ring Isomers - delta-1, 2 & 3
Cefazolin Open-Ring Isomers - delta-1, 2 & 3
  • CAT. No.C980018
  • CAS. No.NA
  • Mol. F.C42H48N24O15S9
  • Mol. W.1417.57 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin Epimer Impurity
Cefazolin Epimer Impurity
  • CAT. No.C980019
  • CAS. No.NA
  • Mol. F.C14H14N8O4S3
  • Mol. W.454.51 g/mol
  • Stock Status:Instock
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Cefazolin 3-hydroxy methyl Impurity (Tetrabutyl ammonium salt)
Cefazolin 3-hydroxy methyl Impurity (Tetrabutyl ammonium salt)
  • CAT. No.C980020
  • CAS. No.NA
  • Mol. F.C27H47N7O5S
  • Mol. W.584.7 g/mol
  • Stock Status:Instock
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Cefazolin Open-Ring Delta-3
Cefazolin Open-Ring Delta-3
  • CAT. No.C980021
  • CAS. No.NA
  • Mol. F.C14H16N8O5S3
  • Mol. W.472.52 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin EP Impurity K
Cefazolin EP Impurity K
  • CAT. No.C980022
  • CAS. No.2410652-70-7
  • Mol. F.C14H15N9O3S3
  • Mol. W.453.52 g/mol
  • Stock Status:Custom Synthesis
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Ceftolozane Impurity 1 Hydrochloride
Ceftolozane Impurity 1 Hydrochloride
  • CAT. No.C980023
  • CAS. No.113479-65-5
  • Mol. F.C16H17ClN2O4S.HCl
  • Mol. W.405.30 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin Impurity 5
Cefazolin Impurity 5
  • CAT. No.C980024
  • CAS. No.1797135-60-4
  • Mol. F.C5H9N5O3
  • Mol. W.187.16 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin EP Impurity D Sodium Salt
Cefazolin EP Impurity D Sodium Salt
  • CAT. No.C980025
  • CAS. No.27164-45-0
  • Mol. F.C13H14N6O6S.Na
  • Mol. W.405.34 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin Open-Ring Delta-2
Cefazolin Open-Ring Delta-2
  • CAT. No.C980026
  • CAS. No.NA
  • Mol. F.C14H16N8O5S3
  • Mol. W.472.52 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin Open-Ring Delta-4
Cefazolin Open-Ring Delta-4
  • CAT. No.C980027
  • CAS. No.NA
  • Mol. F.C14H16N8O5S3
  • Mol. W.472.52 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin sodium pentahydrate
Cefazolin sodium pentahydrate
  • CAT. No.C980028
  • CAS. No.115850-11-8
  • Mol. F.C14H14N8O4S3.Na.5H2O
  • Mol. W.567.58 g/mol
  • Stock Status:Custom Synthesis
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