Cefazolin Related Products 
Venkatasai is a leading innovator in the field of pharmaceutical reference standards, offering high-quality Reference Standards of Abacavir, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope-labeled compounds, and nitrosamines (N-NO products). Our Abacavir impurity reference standards play a vital role in pharmaceutical research, supporting product development, ANDA and DMF filings, quality control (QC), method validation, and stability studies. They are also instrumental in identifying unknown impurities and evaluating genotoxic potential. All Abacavir-related products are thoroughly characterized and supplied with comprehensive Certificates of Analysis (COA) and analytical data that comply with regulatory standards. EP/USP traceable standards can also be provided upon request. Furthermore, all supplied products undergo periodic re-testing to ensure continued quality and reliability.
Cefazolin
CAT No: VS-C042000
CAS No: 25953-19-9
Mol.F.: C14H14N8O4S3
Mol.Wt.: 454.5
Status: Custom Synthesis
Cefazolin 3-Hydroxymethyl Impurity
CAT No: VS-C042026
CAS No: 478494-71-2
Mol.F.: C11H12N6O5S
Mol.Wt.: 340.3
Status: Custom Synthesis
Cefazolin 3-Hydroxymethyl Impurity Sodium salt
CAT No: VS-C042036
CAS No: 50971-65-8
Mol.F.: C11H12N6O5S : Na
Mol.Wt.: 340.3 : 23.0
Status: Custom Synthesis
Cefazolin Delta-2-Isomer
CAT No: VS-C042031
CAS No: 55390-53-9
Mol.F.: C14H14N8O4S3
Mol.Wt.: 454.5
Status: Custom Synthesis
Cefazolin Diethylamide Δ2 Isomer
CAT No: VS-C042030
CAS No: N/A
Mol.F.: C18H23N9O3S3
Mol.Wt.: 509.6
Status: Custom Synthesis
Cefazolin EP Impurity A
CAT No: VS-C042002
CAS No: 30246-33-4
Mol.F.: C11H12N4O3S3
Mol.Wt.: 344.4
Status: Custom Synthesis
Cefazolin EP Impurity A Hydrochloride
CAT No: VS-C042005
CAS No: 98493-37-9
Mol.F.: C11H12N4O3S3 : HCl
Mol.Wt.: 344.4 : 36.5
Status: Custom Synthesis
Cefazolin EP Impurity A Potassium salt
CAT No: VS-C042004
CAS No: 88739-52-0
Mol.F.: C11H12N4O3S3 : K
Mol.Wt.: 344.4 : 39.1
Status: Custom Synthesis
Cefazolin EP Impurity A Sodium salt
CAT No: VS-C042003
CAS No: 66659-21-0
Mol.F.: C11H12N4O3S3 : Na
Mol.Wt.: 344.4 : 23.0
Status: Custom Synthesis
Cefazolin EP Impurity B
CAT No: VS-C042006
CAS No: 2384108-14-7
Mol.F.: C16H20N4O4S3
Mol.Wt.: 428.5
Status: Custom Synthesis
Cefazolin EP Impurity C
CAT No: VS-C042007
CAS No: 56842-77-4
Mol.F.: C11H12N6O4S
Mol.Wt.: 324.3
Status: Custom Synthesis
Cefazolin EP Impurity C Sodium salt
CAT No: VS-C042008
CAS No: 37051-04-0
Mol.F.: C11H12N6O4S : Na
Mol.Wt.: 324.3 : 23.0
Status: Custom Synthesis
Cefazolin EP Impurity D
CAT No: VS-C042009
CAS No: 32510-61-5
Mol.F.: C13H14N6O6S
Mol.Wt.: 382.4
Status: Custom Synthesis
Cefazolin EP Impurity D Potassium salt
CAT No: VS-C042011
CAS No: 117030-04-3
Mol.F.: C13H14N6O6S : K
Mol.Wt.: 382.4 : 39.1
Status: Custom Synthesis
Cefazolin EP Impurity D Sodium salt
CAT No: VS-C042010
CAS No: 27164-45-0
Mol.F.: C13H14N6O6S : Na
Mol.Wt.: 382.4 : 23.0
Status: Custom Synthesis
Cefazolin EP Impurity E
CAT No: VS-C042012
CAS No: 29490-19-5
Mol.F.: C3H4N2S2
Mol.Wt.: 132.2
Status: In Stock
Cefazolin EP Impurity E Potassium salt
CAT No: VS-C042014
CAS No: 79929-61-6
Mol.F.: C3H4N2S2 : K
Mol.Wt.: 132.2 : 39.1
Status: Custom Synthesis
Cefazolin EP Impurity E Sodium salt
CAT No: VS-C042013
CAS No: 40045-85-0
Mol.F.: C3H4N2S2 : Na
Mol.Wt.: 132.2 : 23.0
Status: Custom Synthesis
Cefazolin EP Impurity G
CAT No: VS-C042015
CAS No: N/A
Mol.F.: C11H10N6O4S : C6H15N
Mol.Wt.: 322.3 : 101.2
Status: Custom Synthesis
Cefazolin EP Impurity H
CAT No: VS-C042016
CAS No: 957-68-6
Mol.F.: C10H12N2O5S
Mol.Wt.: 272.3
Status: Custom Synthesis
Cefazolin EP Impurity H Hydrochloride
CAT No: VS-C042019
CAS No: 57399-61-8
Mol.F.: C10H12N2O5S : HCl
Mol.Wt.: 272.3 : 36.5
Status: Custom Synthesis
Cefazolin EP Impurity H Potassium salt
CAT No: VS-C042018
CAS No: 53064-81-6
Mol.F.: C10H12N2O5S : K
Mol.Wt.: 272.3 : 39.1
Status: Custom Synthesis
Cefazolin EP Impurity H Sodium salt
CAT No: VS-C042017
CAS No: 40994-22-7
Mol.F.: C10H12N2O5S : Na
Mol.Wt.: 272.3 : 23.0
Status: Custom Synthesis
Cefazolin EP Impurity I
CAT No: VS-C042020
CAS No: 1675244-99-1
Mol.F.: C14H16N8O5S3
Mol.Wt.: 472.5
Status: Custom Synthesis
Cefazolin EP Impurity J
CAT No: VS-C042021
CAS No: 1675245-00-7
Mol.F.: C11H12N6O5S
Mol.Wt.: 340.3
Status: Custom Synthesis
Cefazolin EP Impurity K
CAT No: VS-C042022
CAS No: 2410652-70-7
Mol.F.: C14H15N9O3S3
Mol.Wt.: 453.5
Status: Custom Synthesis
Cefazolin EP Impurity L
CAT No: VS-C042023
CAS No: N/A
Mol.F.: C14H14N8O4S3
Mol.Wt.: 454.5
Status: Custom Synthesis
Cefazolin Impurity (1H-Tetrazole-1-Acetic Acid) Hydrochloride
CAT No: VS-C042035
CAS No: 1222197-07-0
Mol.F.: C3H4N4O2 : HCl
Mol.Wt.: 128.1 : 36.5
Status: Custom Synthesis
Cefazolin Impurity (1H-Tetrazole-1-Acetic Acid) Potassium salt
CAT No: VS-C042034
CAS No: 51286-83-0
Mol.F.: C3H4N4O2 : K
Mol.Wt.: 128.1 : 39.1
Status: Custom Synthesis
Cefazolin Impurity (1H-Tetrazole-1-Acetic Acid) Sodium salt
CAT No: VS-C042033
CAS No: 51286-84-1
Mol.F.: C3H4N4O2 : Na
Mol.Wt.: 128.1 : 23.0
Status: Custom Synthesis
Cefazolin Impurity 1
CAT No: VS-C042037
CAS No: 2416213-67-5
Mol.F.: C18H20N4O8S2
Mol.Wt.: 484.5
Status: Custom Synthesis
Cefazolin Impurity 3
CAT No: VS-C042038
CAS No: N/A
Mol.F.: C13H17N3O6S
Mol.Wt.: 343.4
Status: Custom Synthesis
Cefazolin Impurity 4
CAT No: VS-C042039
CAS No: N/A
Mol.F.: C13H17N3O7S
Mol.Wt.: 359.4
Status: Custom Synthesis
Cefazolin Impurity 5
CAT No: VS-C042040
CAS No: 1797135-60-4
Mol.F.: C5H7N5O2
Mol.Wt.: 169.1
Status: Custom Synthesis
Cefazolin Lactone G
CAT No: VS-C042028
CAS No: 1172998-53-6
Mol.F.: C11H10N6O4S
Mol.Wt.: 322.3
Status: Custom Synthesis
Cefazolin Lactone Open Ring
CAT No: VS-C042029
CAS No: N/A
Mol.F.: C11H12N6O5S
Mol.Wt.: 340.3
Status: Custom Synthesis
Cefazolin Sodium
CAT No: VS-C042001
CAS No: 27164-46-1
Mol.F.: C14H13N8NaO4S3
Mol.Wt.: 476.5
Status: In Stock
Cefazolinamide
CAT No: VS-C042032
CAS No: N/A
Mol.F.: C14H15N9O3S3
Mol.Wt.: 453.5
Status: Custom Synthesis
Tetrazolyl Acetamide Acetal
CAT No: VS-C042027
CAS No: 1675245-47-2
Mol.F.: C5H9N5O3
Mol.Wt.: 187.2
Status: In Stock
Tetrazolyl Acetamide Diethyl Acetal
CAT No: VS-C042024
CAS No: 2150044-08-7
Mol.F.: C9H17N5O3
Mol.Wt.: 243.3
Status: Custom Synthesis
Tetrazolylacetic Acid (USP)
CAT No: VS-C042025
CAS No: 21732-17-2
Mol.F.: C3H4N4O2
Mol.Wt.: 128.1
Status: In Stock
