Azithromycin Impurity 27 CAS CATO-C4X-100327
| CAS No. | CATO-C4X-100327 |
| Molecular Formula | C38H73N2O13 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 788.99 g/mol gives Azithromycin Impurity 27 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Azithromycin Impurity 27 (CAS CATO-C4X-100327), a pharmacopoeial impurity reference standard (molecular formula C38H73N2O13Na, MW 788.99 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Azithromycin Impurity 27 (C38H73N2O13Na) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C38H73N2O13 Na |
| Molecular Weight | 788.99 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| Nitrogen Atoms | 2 |
Related Azithromycin Standards
- Azithromycin EP Impurity J (CAS 117693-41-1)
- Azithromycin Impurity 35 (CAS 117693-42-2)
- Azithromycin Dihydrate (CAS 117772-70-0)
- Azithromycin monohydrateDISCONTINUED (CAS 121470-24-4)
- Azithromycin impurity 53 (CAS 152727-04-3)
- Azithromycin CP Impurity R (CAS 161193-44-8)
- Azithromycin-d3 (CAS 163921-65-1)
- Azithromycin EP Impurity I (CAS 172617-84-4)
Recommended Standards
- N-Nitroso Abacavir EP Impurity A (CAS CATO-C4X-152715)
- Topiramate Impurity 43 (CAS CATO-C4X-176843)
- Nafamostat impurity 102 (CAS CATO-C4X-1332102)
- 4-(3,4-Dichlorophenyl)-1,3-thiazole (CAS 383145-57-1)
- 4-Bromo-1-(2-(2-methyl-1h-imidazol-1-yl)ethyl)-1h-pyrazol-3-amine (CAS 1247737-29-6)
- Methyl (S)-2-((tert-butoxycarbonyl)amino)-3-(3-iodo-4-methoxyphenyl)propanoate (CAS 113850-71-8)
- 7-Bromo-3-chloroimidazo[1,2-a]pyridine (CAS 1019026-31-3)
- 1-(2,4-Dimethoxy-3-methylbenzenesulfinyl)-4-methylpiperazine (CAS 338981-90-1)
- 2-(2-(4-Chlorophenoxy)phenyl)acetic Acid (CAS 25563-04-6)
- Peptide Impurity 34 (CAS 21282-09-7)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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