Cefazolin 3-Position Side Chain Dimer 2
- CAS66666-63-5
- CatalogueRS-I002372
- FormulaC6H6N4S4
- MW262.38
On this page
Product identification
| Product name | Cefazolin 3-Position Side Chain Dimer 2 |
|---|---|
| Catalogue No. | RS-I002372 |
| CAS No. | 66666-63-5 |
| Molecular formula | C6H6N4S4 |
| Molecular weight | 262.38 |
| Availability | In stock— dispatched in about 1–2 weeks |
| Standard type | Impurity Reference Standards |
| Drug substance | Cefazolin |
| Also known as | Cefazolin Impurity 43 |
| Storage | Refer to the certificate of analysis (COA) supplied with each lot |
| Intended use | For laboratory and research use only. Not for human or veterinary use. |
What is stated on the certificate
Content and purity are assigned per lot and stated on the certificate of analysis issued for the batch you receive — they are not a catalogue-level figure. The certificate records the tests performed, the specification applied and the result obtained for that lot.
| Field | Basis |
|---|---|
| Identity | Spectroscopic and chromatographic methods appropriate to the material |
| Purity | Chromatographic purity, area normalisation unless stated otherwise |
| Assay / content | Mass balance, corrected for the stated volatiles and residue |
| Catalogue and batch numbers | RS-I002372 / batch number on the certificate |
| Retest date | Printed on the certificate for the lot supplied |
Frequently asked
What documentation is supplied with this lot?
Is the assigned value given on an “as is” basis?
How should this material be stored?
Do you supply pack sizes other than those listed?
Finding this standard
Buyers reach this compound by CAS number, by catalogue number, through the drug substance it belongs to, or through the type of standard it is. Those routes all start here:
- Other impurities of Cefazolin
- Impurity Reference Standards of this kind
- Documents for this item (COA, SDS)
- Certificate of analysis for RS-I002372
- Request a quotation for RS-I002372
Searching another way? Send the structure, a SMILES string or the pharmacopoeial name — a CAS number is not required for a non-compendial impurity. Write to sales@rssechem.com.
Other standards of Cefazolin
All 55 further standards are listed here — every link is in the page, not loaded later.
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Cefazolin
CUSTOM SYNTHESISRS-I002084 -
Cefazolin EP Impurity A Hydrochloride
IN STOCKRS-C103033 -
Cefazolin EP Impurity D Sodium Salt
BACK ORDERRS-C103023 -
Cefazolin EP Impurity G
IN STOCKRS-C103001 -
Cefazolin EP Impurity K
BACK ORDERRS-C103011 -
Cefazolin EP Impurity L
BACK ORDERRS-I001AAA -
Cefazolin Impurity EP-A
IN STOCKRS-C103016 -
Cefazolin Impurity EP-E
IN STOCKRS-C103015 -
Cefazolin Impurity EP-H
IN STOCKRS-C103019 -
Cefazolin Impurity EP-J
IN STOCKRS-C103004 -
Cefazolin Impurity K(EP)
BACK ORDERRS-C103020 -
Cefazolin USP Impurity B
IN STOCKRS-C103005 -
Cefazolin USP Impurity B Precursor
CUSTOM SYNTHESISRS-C103006 -
Cefazolin USP Impurity E
IN STOCKRS-C103024 -
Cefazolin USP Impurity L-δ2
BACK ORDERRS-C103009 -
Tetrazolylacetic Acid (USP)
IN STOCKRS-I516116 -
Cefazolin Impurity C
IN STOCKRS-C103002 -
(1H-Tetrazol-5-yl)-acetic acid
IN STOCKRS-P030104 -
1,2-bis(5-methyl-1,3,4-thiadiazol-2-yl)disulfane
IN STOCKRS-C103086 -
1,3-Dipyrrolidinopropane
IN STOCKRS-U004034 -
1-(Carboxymethyl)-1H-tetrazolepotassium salt
IN STOCKRS-Z408J5F -
7-Pivalamido Cefazolin
BACK ORDERRS-C103010 -
Acetic acid, 2-(dithiocarboxy)hydrazide
BACK ORDERRS-Z401MAT -
bis(5-methyl-1,3,4-thiadiazol-2-yl)sulfane
IN STOCKRS-C103085 -
Cefazolin Impurity P4
BACK ORDERRS-Z401FKX -
Cefazolin sodium salt
IN STOCKRS-I002086 -
Cefazolin-[13C2,15N]
BACK ORDERRS-I098342 -
Cefoxazole
BACK ORDERRS-U065762 -
Ethyl (Z)-4-chloro-2-(hydroxyimino)-3-oxobutanoate
IN STOCKRS-C103018 -
Ethyl 1H-Tetrazole-5-acetate
IN STOCKRS-U095110 -
Methyl 2-(1H-Tetrazol-1-Yl)Acetate
IN STOCKRS-U211N9V -
N-(2,2-Diethoxyethyl)-2-(1H-tetrazol-1-yl)acetamide
CUSTOM SYNTHESISRS-Z401F6E -
Pyrazol-1-yl-acetic acid
CUSTOM SYNTHESISRS-P017312 -
Cefazolin USP Related Compound D(Diastereoisomer Mixture)
CUSTOM SYNTHESISRS-C103026 -
Cefazolin Impurity 10
IN STOCKRS-C103008 -
Cefazolin Impurity 19
CUSTOM SYNTHESISRS-C103014 -
Cefazolin Impurity 24
BACK ORDERRS-I001AZ6 -
Cefazolin Impurity 30
BACK ORDERRS-I001ACU -
Cefazolin Impurity 36
BACK ORDERRS-C103022 -
Cefazolin Impurity 36 (5456-21-3)
IN STOCKRS-C103029 -
(Z)-Cefazolin Impurity 44
IN STOCKRS-Z401K40 -
Cefazolin Impurity 57
BACK ORDERRS-C103025 -
Cefazolin Impurity 73
BACK ORDERRS-I001575 -
Cefazolin Impurity 78
BACK ORDERRS-I001A9S -
Cefazolin Impurity 82
BACK ORDERRS-I001462 -
Cefazolin Impurity 119
IN STOCKRS-C103027 -
Cefazolin Impurity 137
IN STOCKRS-C103003 -
Cefazolin Impurity 138
IN STOCKRS-C103007 -
Cefazolin Impurity 139
BACK ORDERRS-C103012 -
Cefazolin Impurity 140
IN STOCKRS-C103013 -
Cefazolin Impurity 142
IN STOCKRS-C103028
Pharmacopoeial names (EP, USP, BP, JP) are used for identification purposes only and do not imply endorsement by those bodies. This product is supplied for laboratory and research use only — not for human or veterinary use.


















![Chemical structure of (6R,7R)-7-amino-3-(((5-methyl-1,3,4-thiadiazol-2-yl)thio)methyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxamide](/structures/w4/VFQRQZWOKFREJQ-LHLIQPBNSA-N.webp?v=8)








![Chemical structure of Cefazolin-[13C2,15N]](/structures/w4/MLYYVTUWGNIJIB-ZDZFQHAJSA-N.webp?v=8)







![Chemical structure of sodium (6R,7R)-7-(2-(1H-tetrazol-1-yl)acetamido)-3-(((5-methyl-1,3,4-thiadiazol-2-yl)thio)methyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 5-oxide](/structures/w4/YAZKVFNBEVYAJP-QCZPPVBGSA-M.webp?v=8)
















