Penicillin G
Also known as: benzylpenicillin, Penicillin G, (2S,5R,6R)-3,3-Dimethyl-7-oxo-6-[(phenylacetyl)amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, Ursopen, abbocillin, cilloral, cilopen, cosmopen, dropcillin, galofak, gelacillin, Penicillin II, (phenylmethyl)penicillin
Penicillin G (CAS 61-33-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C16H18N2O4S and a molecular weight of 334.390 g/mol. Key properties include a boiling point of 663.3±55.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 355.0±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 61-33-6
- Jingsj CID
- J-8265-1
- Molecular Formula
- C16H18N2O4S
- Molecular Weight
- 334.390 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 663.3±55.0 °C at 760 mmHg |
|---|---|
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 355.0±31.5 °C |
| Exact Mass | 334.098724 |
| PSA | 112.01000 |
| LogP | 1.67 |
| Appearance | powder |
| Vapor Pressure | 0.0±2.1 mmHg at 25°C |
| Refractive Index | 1.655 |
| Additional Property | H2O: 100 mg/mL |
Activity & Biological Data
| Additional Information | [1]. Li D, et al. Determination of penicillin G and its degradation products in a penicillin production wastewater treatment plant and the receiving river. Water Res. 2008 Jan;42(1-2):307-17. |
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Customs & Trade Information
| HS Code | 32041900 |
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Frequently Asked Questions
What is the CAS number of Penicillin G?
The CAS number of Penicillin G is 61-33-6.
What are the molecular formula and molecular weight of Penicillin G?
Penicillin G has molecular formula C16H18N2O4S and molecular weight 334.390 g/mol.
What are the upstream and downstream products of Penicillin G?
For Penicillin G, Upstream Products: 6-Aminopenicillanic acid, Phenylacetyl chloride, Ampicillin; Downstream Products: 6-Aminopenicillanic acid, D-Penicillamine, Benzylpenicillin potassium.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Penicillin G (CAS 61-33-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8265-1 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.