Penicillin G potassium salt
Penicillin G potassium salt (CAS: 113-98-4), a potassium salt of benzylpenicillin with the molecular formula C16H17KN2O4S, is a potent antibacterial agent. It functions by interfering with bacterial cell wall synthesis. This compound is widely recognised for its therapeutic applications in treating various bacterial infections. Tech Serve Solutions supplies this crucial pharmaceutical intermediate for research and development purposes.
- IUPAC
- Benzylpenicillin potassium salt

Antibacterial Agent Research
Utilised in scientific research to investigate antibacterial mechanisms and develop new treatment strategies against susceptible bacterial strains. Its role in inhibiting cell wall synthesis makes it a key compound for microbiological studies.
Pharmaceutical Intermediate
Serves as a critical intermediate in the synthesis of various pharmaceutical compounds and antibiotics. Its structure is foundational for developing derivatives with modified properties or enhanced efficacy.
Biochemical Studies
Employed in biochemical research to study enzyme inhibition and metabolic pathways in bacteria. Its specific mode of action provides valuable insights into prokaryotic cell biology.
| Molecular weight | 372.48 |
|---|---|
| Empirical formula | C16H17KN2O4S |
| Assay | ≥98.0% (HPLC) |
| Solubility | H2O: soluble100 mg/mL |
| Optical activity | [α]20/D +290±5°, c = 2% in H2O |
| Storage temperature | 2-8°C |
| Suitability | mouse embryo tested |

Hazard statements
- H317May cause an allergic skin reaction
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 42/43 |
| Safety statements (S) | 36/37 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| λ | 0.2 % in H2O |
|---|---|
| Uv Absorption | λ: 264 nm Amax: ≤0.850λ: 280 nm Amax: ≤0.100 |
| Potency | 1440-1680 units per mg |
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 potassium salt used for?
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Penicillin G potassium salt is primarily used as an antibacterial agent, interfering with bacterial cell wall synthesis. It is also utilized as a pharmaceutical intermediate in research and biochemical studies.
What is the CAS number and formula for Penicillin G potassium salt?
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The CAS number is 113-98-4 and the molecular formula is C16H17KN2O4S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Penicillin G potassium salt with an assay of ≥98.0% (HPLC). We do not represent this product as USP, BP, or EP grade.
How should Penicillin G potassium salt be handled?
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Handle with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, face shield, and gloves, due to its potential to cause an allergic skin reaction (H317).
How is Penicillin G potassium salt shipped and exported?
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Penicillin G potassium salt is stored at 2-8°C and can be packed and exported globally by Tech Serve Solutions. Please contact us for specific shipping and export inquiries.
How can I request a sample or quote?
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To request a sample or a quote for Penicillin G potassium salt, please contact our sales department through the website or by phone.
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