Azithromycin impurities and related standards
26 reference standards related to Azithromycin held in the RSSE catalogue — pharmacopoeial impurities, non-compendial impurities, metabolites and labelled analogues where available.
In this group: 25 impurity reference standards · 1 fine chemical. CAS numbers are listed for 26 of 26; 25 entries carry a structure drawing.
| Compound | CAS No. | Catalogue No. | Formula | MW |
|---|---|---|---|---|
| Azithromycin Impurity 20 | 111321-02-9 | RS-A067001 | C37H68N2O13 | 748.94 |
| Azithromycin Impurity R | 161193-44-8 | RS-A067004 | C37H66N2O12 | 730.93 |
| Azithromycin EP Impurity I | 172617-84-4 | RS-A067005 | C37H70N2O12 | 734.96 |
| Azithromycin Impurity 12 | 1914946-68-1 | RS-A067006 | C59H110N2O7 | 959.5 |
| Azithromycin EP Impurity Q | 2095879-65-3 | RS-A067007 | C44H75N3O15S | 918.14 |
| Azithromycin EP Impurity B | 307974-61-4 | RS-A067010 | C38H72N2O11 | 732.99 |
| Azithromycin Impurity S | 53066-26-5 | RS-A067011 | C38H70N2O13 | 762.97 |
| Azithromycin EP Impurity N | 612069-25-7 | RS-A067012 | C36H65NO13 | 719.9 |
| Azithromycin EP Impurity D | 612069-26-8 | RS-A067013 | C38H72N2O13 | 764.98 |
| Azithromycin EP Impurity E | 612069-27-9 | RS-A067014 | C36H68N2O12 | 720.93 |
| Azithromycin EP Impurity F | 612069-28-0 | RS-A067015 | C38H70N2O13 | 762.97 |
| Azithromycin EP Impurity H | 612069-30-4 | RS-A067016 | C45H77N3O15S | 932.17 |
| Azithromycin EP Impurity G | 612069-31-5 | RS-A067017 | C44H76N2O14S | 889.14 |
| Azithromycin EP Impurity K | 612534-95-9 | RS-A067018 | C38H70N2O13 | 762.97 |
| Azithromycin Impurity C | 620169-47-3 | RS-A067019 | C37H70N2O12 | 734.96 |
| Azithromycin EP Impurity O | 763924-54-5 | RS-A067021 | C39H74N2O12 | 763.01 |
| Azithromycin EP Impurity M | 765927-71-7 | RS-A067022 | C37H68N2O13 | 748.94 |
| Azithromycin Impurity A | 76801-85-9 | RS-A067023 | C37H70N2O12 | 734.96 |
| Azithromycin EP Impurity L | 90503-06-3 | RS-A067024 | C38H72N2O13 | 764.98 |
| Azithromycin impurity P | 92594-45-1 | RS-A067025 | C39H74N2O12 | 763.01 |
| Azithromycin Impurity 19 | 99290-97-8 | RS-A067026 | C37H66N2O12 | 730.93 |
| Azithromycin impurities 23 | 1126088-19-4 | RS-A067002 | C38H69N3O13S | 808.03 |
| Azithromycin EP Impurity J | 117693-41-1 | RS-A067003 | C30H58N2O9 | 590.79 |
| Azithromycin impurities 20 | 226086-79-9 | RS-A067008 | C36H66N2O13 | 734.93 |
| Azithromycin Impurity 1 | 620169-51-9 | RS-A067020 | C36H65NO12 | 703.91 |
| 3-Hydroxy Azithromycinoic Acid Sodium | 2365312-76-9 | RS-A067009 | C30H59N2O10.Na | 630.81 |
Structures
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Azithromycin Impurity 20
COA per lot -
Azithromycin Impurity R
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Azithromycin EP Impurity I
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Azithromycin Impurity 12
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Azithromycin EP Impurity Q
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Azithromycin EP Impurity B
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Azithromycin Impurity S
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Azithromycin EP Impurity N
COA per lot
Frequently asked
How many Azithromycin-related reference standards do you hold?
26 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 26 of them and 25 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply an Azithromycin 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 Azithromycin 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 Azithromycin 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 sales@rssechem.com.