Azithromycin
Azithromycin (CAS 83905-01-5) is a macrolide antibiotic with the empirical formula C38H72N2O12 and a molecular weight of 748.98 g/mol. This compound is recognised for its broad-spectrum antibacterial activity. It functions by interfering with protein synthesis in bacteria. Azithromycin is widely utilised as an active pharmaceutical ingredient (API) in the development of various medicinal formulations for treating bacterial infections.

Antibacterial Agent
Azithromycin serves as a crucial component in formulating medications to combat a range of bacterial infections. Its mechanism involves inhibiting bacterial protein synthesis.
Pharmaceutical Intermediate
As a key intermediate in pharmaceutical manufacturing, Azithromycin is used in the synthesis of therapeutic drugs. Its properties make it valuable for developing treatments against common and complex bacterial pathogens.
Analytical Standard
This compound is supplied as an analytical standard, suitable for use in quality control and research applications. Its defined purity allows for accurate calibration and testing.
| Molecular weight | 748.98 |
|---|---|
| Empirical formula | C38H72N2O12 |
| Assay | ≥95% (NT) |
| Grade | analytical standard |
| Optical activity | [α]/D −45±2°, c = 1% in ethanol |
| Suitability | suitable for 1694 per US EPA |

Hazard statements
- H317May cause an allergic skin reaction
- H334May cause allergy or asthma symptoms if inhaled
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P342
| Protective equipment | Eyeshields, Faceshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 42/43 |
| Safety statements (S) | 22-36/37-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Azithromycin used for?
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Azithromycin is primarily used as an antibacterial agent to treat a variety of bacterial infections and as a pharmaceutical intermediate in drug synthesis. It is also supplied as an analytical standard.
What are the CAS number and formula for Azithromycin?
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The CAS number for Azithromycin is 83905-01-5, and its empirical formula is C38H72N2O12.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Azithromycin as an analytical standard with an assay of ≥95% (NT). We do not represent this product as USP, BP, or EP grade.
How should Azithromycin be handled safely?
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Handling Azithromycin requires caution. It is classified as a Danger hazard. Potential risks include skin sensitisation (H317) and respiratory sensitisation (H334). Appropriate personal protective equipment, including eyeshields, faceshields, gloves, and an N95 or P1 respirator, should be used. Avoid breathing dust.
How is Azithromycin packed and exported?
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Azithromycin is carefully packed to ensure stability and integrity during transport. Tech Serve Solutions is a specialist global supplier and exporter, handling international shipments with expertise.
How can I request a sample or quote for Azithromycin?
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To request a sample or a quote for Azithromycin, please contact our sales team through the website or by phone.
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