Penicillin G benzathine salt hydrate
Penicillin G benzathine salt hydrate (CAS: 1538-09-6) is a long-acting penicillin derivative. Its chemical formula is C32H36N4O8S2 · C16H20N2 · xH2O, with a molecular weight of 909.12 (anhydrous basis). This compound is primarily recognised for its role as an antibiotic, belonging to the beta-lactam class. It is widely utilized in veterinary medicine for the treatment of various bacterial infections due to its sustained release properties.
- IUPAC
- Benzylpenicillin benzathine salt hydrate
- Synonyms
- Benzylpenicillin benzathine salt hydrate

Veterinary Antibiotic
Penicillin G benzathine salt hydrate is a crucial antibiotic in veterinary medicine. It is formulated for the treatment of bacterial infections in animals, offering prolonged therapeutic levels after a single administration.
Pharmaceutical Intermediate
As a derivative of penicillin, it may serve as an intermediate in the synthesis of other related pharmaceutical compounds. Its specific chemical structure makes it valuable for targeted drug development.
Research and Development
This compound is utilized in research laboratories for studies related to antibiotic efficacy, bacterial resistance mechanisms, and the development of new antimicrobial agents.
| Molecular weight | 909.12 (anhydrous basis) |
|---|---|
| Empirical formula | C32H36N4O8S2 · C16H20N2 · xH2O |


Hazard statements
- H302Harmful if swallowed
- H334May cause allergy or asthma symptoms if inhaled
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P342
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-42/43 |
| Safety statements (S) | 36 |
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 Penicillin G benzathine salt hydrate used for?
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Penicillin G benzathine salt hydrate is primarily used as a long-acting antibiotic in veterinary medicine for treating bacterial infections.
What is the CAS number and formula for Penicillin G benzathine salt hydrate?
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The CAS number is 1538-09-6, and the formula is C32H36N4O8S2 · C16H20N2 · xH2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this chemical for research and laboratory use. Purity details are available on the specification sheet, and we do not represent this product as USP, BP, or EP grade unless explicitly stated.
How should Penicillin G benzathine salt hydrate be handled?
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Handle with appropriate personal protective equipment including a dust mask (type N95 or equivalent), eyeshields, face shields, and gloves, as it may cause respiratory irritation (H334) and is harmful if swallowed (H302).
Is Penicillin G benzathine salt hydrate a controlled substance?
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This compound is not listed as a controlled substance based on the provided data.
How is this chemical packed and exported?
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Tech Serve Solutions expertly packs and exports fine chemicals globally, ensuring product integrity and compliance with international shipping regulations.
How can I request a sample or quote for Penicillin G benzathine salt hydrate?
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To request a sample or quote, please contact our sales team through the website or by phone, providing the product name and CAS number (1538-09-6).
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