Plumbagin
Also known as: 1,4-Naphthoquinone, 5-hydroxy-2-methyl-, 5-Hydroxy-2-methyl-1,4-naphthalenedione, 2-Methyl-5-hydroxy-1,4-naphthoquinone, 2-Methyljuglone, Plumbagine, Plumbagone
Plumbagin (CAS 481-42-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C11H8O3 and a molecular weight of 188.17900 g/mol. Key properties include a melting point of 76-78ºC(lit.), a boiling point of 383.9ºC at 760 mmHg, a density of 1.354g/cm3 and a flash point of 200.2ºC. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed and H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 481-42-5
- Jingsj CID
- J-9178-1
- Molecular Formula
- C11H8O3
- Molecular Weight
- 188.17900 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 76-78ºC(lit.) |
|---|---|
| Boiling Point | 383.9ºC at 760 mmHg |
| Density | 1.354g/cm3 |
| Flash Point | 200.2ºC |
| Exact Mass | 188.04700 |
| PSA | 54.37000 |
| LogP | 1.71750 |
| Vapor Pressure | 1.92E-06mmHg at 25°C |
| Refractive Index | 1.63 |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H314 — Causes severe skin burns and eye damage
Activity & Biological Data
| Additional Information | [1]. Aziz MH, et al. Plumbagin, a medicinal plant-derived naphthoquinone, is a novel inhibitor of the growth and invasion of hormone-refractory prostate cancer. Cancer Res. 2008 Nov 1;68(21):9024-32. |
|---|
Customs & Trade Information
| HS Code | 2914690090 |
|---|---|
| Summary | 2914690090 other quinones。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Plumbagin?
The CAS number of Plumbagin is 481-42-5.
What are the molecular formula and molecular weight of Plumbagin?
Plumbagin has molecular formula C11H8O3 and molecular weight 188.17900 g/mol.
Is Plumbagin hazardous?
Plumbagin has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of Plumbagin?
For Plumbagin, Upstream Products: Tetramethyltin; Downstream Products: 2-Methylnaphthalene.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Plumbagin (CAS 481-42-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-9178-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.