Cefazolin Sodium Related Compounds & Impurities

Cefazolin Sodium is the most widely used first-generation cephalosporin globally for surgical prophylaxis and Gram-positive infections.

Simson Pharma Limited along with its subsidiary offices Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) is a trusted manufacturer and supplier of high-quality pharmaceutical reference standards, offering a comprehensive portfolio of Cefazolin Sodium reference standards, pharmacopeial and non-pharmacopeial Cefazolin Sodium impurities, related compounds, related substances, metabolites, stable isotope-labelled compounds, deuterium labelled compounds and nitrosamine (N-NO) reference standards.

These materials support pharmaceutical research and development, product development, ANDA and DMF submissions, quality control (QC), analytical method development and validation, stability studies, impurity identification, and genotoxic impurity assessment.

Our Cefazolin Sodium-related reference standards are thoroughly characterized using advanced analytical techniques and are supplied with comprehensive Certificates of Analysis (COA) and supporting analytical data from our USFDA certified, ISO 17025 and ISO 17034 accredited Lab, to meet global regulatory expectations. EP and USP traceable reference standards can also be provided upon request, subject to availability. Simson is also a provider of EP and USP traceable standards. To ensure consistent quality and reliability, our reference standards are periodically re-tested according to established quality management procedures.

Pharmaceutical Reference Standards / Impurity Standards

Cefazolin Sodium
Cefazolin Sodium
  • CAT. No.C980000
  • CAS. No.27164-46-1
  • Mol. F.C14H13N8O4S3.Na
  • 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.340.30 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.472.52 g/mol
  • Stock Status:Under 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.340.32 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 EP Impurity L
Cefazolin EP Impurity L
  • CAT. No.C980019
  • CAS. No.NA
  • Mol. F.C14H14N8O4S3
  • Mol. W.454.51 g/mol
  • Stock Status:Instock
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Cefazolin 3-Hydroxymethyl Impurity Tetrabutylammonium
Cefazolin 3-Hydroxymethyl Impurity Tetrabutylammonium
  • CAT. No.C980020
  • CAS. No.478494-71-2 (free base)
  • Mol. F.C11H12N6O5S.C16H36N
  • Mol. W.582.78 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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rac-Cefazolin Open-Ring Lactone
rac-Cefazolin Open-Ring Lactone
  • CAT. No.C980029
  • CAS. No.1675245-01-8
  • Mol. F.C11H12N6O5S
  • Mol. W.340.32 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin EP Impurity J Sodium
Cefazolin EP Impurity J Sodium
  • CAT. No.C980030
  • CAS. No.NA
  • Mol. F.C11H12N6O5S.Na
  • Mol. W.363.30 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin Delta-2-Isomer
Cefazolin Delta-2-Isomer
  • CAT. No.C980031
  • CAS. No.55390-53-9
  • Mol. F.C14H14N8O4S3
  • Mol. W.454.51 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin Diethylamide delta 2 Isomer
Cefazolin Diethylamide delta 2 Isomer
  • CAT. No.C980032
  • CAS. No.NA
  • Mol. F.C18H23N9O3S3
  • Mol. W.509.63 g/mol
  • Stock Status:Custom Synthesis
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Cefazolin Thioxo Analog
Cefazolin Thioxo Analog
  • CAT. No.C980033
  • CAS. No.1172998-54-7
  • Mol. F.C14H14N8O4S3
  • Mol. W.454.51 g/mol
  • Stock Status:Custom Synthesis
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