6-Aminopenicillanic acid
Also known as: 6-APA, (+)-6-Aminopenicillanic acid, 6-Amino-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, (2S,5R,6R)-6-Amino-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, Aminopenicillanic acid, Penicin, 6-Aminopenicillansure, 6b-Aminopenicillanic Acid, Amoxicillin Impurity 1
6-Aminopenicillanic acid (CAS 551-16-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H12N2O3S and a molecular weight of 216.258 g/mol. Key properties include a melting point of 198-200 °C (dec.)(lit.), a boiling point of 460.2±45.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 232.1±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 551-16-6
- Jingsj CID
- J-1101052-9
- Molecular Formula
- C8H12N2O3S
- Molecular Weight
- 216.258 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 198-200 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 460.2±45.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 232.1±28.7 °C |
| Exact Mass | 216.056870 |
| PSA | 108.93000 |
| LogP | -0.36 |
| Vapor Pressure | 0.0±2.4 mmHg at 25°C |
| Refractive Index | 1.656 |
Activity & Biological Data
| Additional Information | [1]. Lucie Vobecká, et al. Optimization of Aqueous Two-Phase Systems for the Production of 6-aminopenicillanic Acid in Integrated Microfluidic Reactors-Separators. N Biotechnol. 2018 Dec 25;47:73-79. |
|---|
Customs & Trade Information
| HS Code | 2941109300 |
|---|---|
| Summary | 2941109300. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:Q(report of inspection of soundness on import medicines). MFN tariff:4.0%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 6-Aminopenicillanic acid?
The CAS number of 6-Aminopenicillanic acid is 551-16-6.
What are the molecular formula and molecular weight of 6-Aminopenicillanic acid?
6-Aminopenicillanic acid has molecular formula C8H12N2O3S and molecular weight 216.258 g/mol.
What are the upstream and downstream products of 6-Aminopenicillanic acid?
For 6-Aminopenicillanic acid, Upstream Products: Penicillin V; Downstream Products: Azlocillin, Mecillinam, Ampicillin.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "6-Aminopenicillanic acid (CAS 551-16-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1101052-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.