9-Methoxycamptothecin
Also known as: (4S)-4-Ethyl-4-hydroxy-9-methoxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione, 10-Methoxycamptothecin, Methoxycamptothecin, 9-, NSC 111533, Camptothecine, 10-methoxy-, 1H-Pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione, 4-ethyl-4-hydroxy-9-methoxy-, (4S)-
9-Methoxycamptothecin (CAS 19685-10-0) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C21H18N2O5 and a molecular weight of 378.378 g/mol. Key properties include a boiling point of 773.1±60.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 421.4±32.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 19685-10-0
- Jingsj CID
- J-1957090-2
- Molecular Formula
- C21H18N2O5
- Molecular Weight
- 378.378 g/mol
- Category
- Organic Bases
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 773.1±60.0 °C at 760 mmHg |
|---|---|
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 421.4±32.9 °C |
| Exact Mass | 378.121582 |
| PSA | 90.65000 |
| LogP | 1.69 |
| Vapor Pressure | 0.0±2.8 mmHg at 25°C |
| Refractive Index | 1.723 |
| Storage Conditions | 2-8C |
Activity & Biological Data
| Additional Information | [1]. Zheng J, et al. Development and validation of a RP-HPLC method with fluorescence detection for simultaneous determination of 10-methoxycamptothecin and its metabolite 10-hydroxycamptothecin in rat plasma. J Chromatogr B Analyt Technol Biomed Life Sci. 2012 Aug 15;903:81-7. |
|---|
Frequently Asked Questions
What is the CAS number of 9-Methoxycamptothecin?
The CAS number of 9-Methoxycamptothecin is 19685-10-0.
What are the molecular formula and molecular weight of 9-Methoxycamptothecin?
9-Methoxycamptothecin has molecular formula C21H18N2O5 and molecular weight 378.378 g/mol.
What are the upstream and downstream products of 9-Methoxycamptothecin?
For 9-Methoxycamptothecin, Upstream Products: 1-isocyano-4-methoxybenzene, Diazomethane, (S)-10-Hydroxycamptothecin; Downstream Products: (S)-10-Hydroxycamptothecin, Topotecan hydrochloride.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "9-Methoxycamptothecin (CAS 19685-10-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1957090-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.