Azithromycin CAS 83905-01-5
| CAS No. | 83905-01-5 |
| Molecular Formula | C38H72N2O12 |
| Molecular Weight | 748.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Azithromycin (C38H72N2O12) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Azithromycin (CAS 83905-01-5), molecular formula C38H72N2O12 and molecular weight 748.98 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Azithromycin meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C38H72N2O12 |
| Molecular Weight | 748.98 g/mol |
| Purity | >95% |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 2 |
Related Azithromycin Standards
- Azithromycin EP Impurity M (CAS 765927-71-7)
- Azithromycin Impurity 40 (CAS 76820-32-1)
- Azithromycin Impurity 49 (CAS CATO-C4X-100349)
- Azithromycin impurity 55 (CAS 944124-75-8)
- Azithromycin-d3 (CAS 163921-65-1)
- Azithromycin-13C-d3 (CAS CATO-C4X-100337)
- Azithromycin-13CD3 (CAS CATO-CCAD301299)
- Azithromycin-d5 (major) (CAS CATO-CCAD301941)
Recommended Standards
- Erythromycin A 9-Oxime (Mixture of Z and E Isomers) (CAS 13127-18-9)
- 4,4'-Bis[4-(di-p-tolylamino)styryl]biphenyl (CAS 119586-44-6)
- Gadobutrol Impurity 183 (CAS CATO-C4X-2120183)
- 2,2'-(Benzylimino)diethanol N-Oxide (CAS 15831-62-6)
- Methyl 5-chloro-7-methyl-7H-pyrrolo[2,3-d]pyrimidine-4-carboxylate (CAS 1823922-80-0)
- 2-Nitro-5-phenylthioaniline (CAS 43156-47-4)
- 1-(3,4,5-Trimethoxyphenyl)prop-2-en-1-one (CAS 106331-50-4)
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- (R)-2-Amino-5-(3,3-dimethylguanidino)pentanoic acid (CAS 190784-53-3)
- 2-(4-Chlorobenzylidene)-5-(methylthio)thiophen-3(2H)-one (CAS 1000574-38-8)
- 2-Amino-2-(2-bromo-4-fluorophenyl)propanoic acid (CAS 1270505-27-5)
- Methyl 5-amino-1-(2-methylphenyl)-1H-pyrazole-4-carboxylate (CAS 121716-24-3)
- 1-Benzyl-4-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole (CAS 1130489-35-8)
- Peptide Impurity 09 X TFA Salt (CAS CATO-CPTD788809)
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