Parecoxib impurities and related standards
10 reference standards related to Parecoxib held in the RSSE catalogue — pharmacopoeial impurities, non-compendial impurities, metabolites and labelled analogues where available.
CAS numbers are listed for 10 of 10; 9 entries carry a structure drawing.
| Compound | CAS No. | Catalogue No. | Formula | MW |
|---|---|---|---|---|
| Parecoxib Impurity 6 | 1373038-56-2 | RS-P093001 | C16H14N2O3S | 314.36 |
| Parecoxib Impurity 13 | 1708094-99-8 | RS-P093002 | C22H23N3O7S2 | 505.56 |
| Parecoxib Impurity 11 | 1709956-89-7 | RS-P093003 | C19H18N2O4S | 370.42 |
| Parecoxib Impurity 31 | 181695-72-7 | RS-P093005 | C16H14N2O3S | 314.36 |
| Parecoxib Impurity 33 | 198471-06-6 | RS-P093006 | C18H16N2O4S | 356.4 |
| Parecoxib Impurity 12 | 2235371-89-6 | RS-P093007 | C19H18N2O4S | 370.42 |
| Parecoxib Impurity 19 (Valdecoxib Impurity 10 (Desulfonamide)) | 37928-17-9 | RS-P093008 | C16H13NO | 235.29 |
| Parecoxib Impurity 34 | 451-40-1 | RS-P093009 | C14H12O | 196.24 |
| Parecoxib Impurity 7 | 501093-49-8 | RS-P093010 | C16H14N2O4S | 330.36 |
| Parecoxib Impurity 18 | 1773487-90-3 | RS-P093004 | C16H13NO4S | 315.34 |
Structures
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Parecoxib Impurity 6
COA per lot -
Parecoxib Impurity 13
COA per lot -
Parecoxib Impurity 11
COA per lot -
Parecoxib Impurity 31
COA per lot -
Parecoxib Impurity 33
COA per lot -
Parecoxib Impurity 12
COA per lot -
Parecoxib Impurity 34
COA per lot
Frequently asked
How many Parecoxib-related reference standards do you hold?
10 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 10 of them and 9 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply a Parecoxib impurity that is not listed here?
Yes. Non-compendial impurities can be quoted from a structure — a CAS number is not required. Send the structure, a SMILES string or the parent drug substance with your enquiry and we will come back with availability.
What documentation is supplied with Parecoxib impurities?
Every lot ships with its own certificate of analysis. The certificate records the catalogue number, the batch number, the tests performed, the specification applied and the result obtained for that lot. A safety data sheet is supplied with the shipment.
Do you publish prices or a lead time for Parecoxib impurities?
No price list is published: quotations are prepared per enquiry, because availability and packing depend on the lot and the quantity you need. Send the catalogue number and the quantity and a technical contact will answer with availability and a quotation.
Cannot find the impurity you need? Non-compendial impurities can be quoted from a structure — a CAS number is not required. Write to [email protected].