alpha-Yohimbine
α-育亨宾
Also known as: Rauwolscine, Corynanthidine, Methyl (16β,17α,20α)-17-hydroxyyohimban-16-carboxylate, 17α-Hydroxy-20α-yohimban-16β-carboxylic acid methyl ester, α-Yohimbine, Alpha-yohimbine, Yohimbine EP Impurity B
alpha-Yohimbine (CAS 131-03-3) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C21H26N2O3 and a molecular weight of 354.443 g/mol. It is also known as Rauwolscine, Corynanthidine and Methyl (16β,17α,20α)-17-hydroxyyohimban-16-carboxylate. Key properties include a melting point of 270-280ºC, a boiling point of 543.0±50.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 282.2±30.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 131-03-3
- Jingsj CID
- J-23230-0
- Molecular Formula
- C21H26N2O3
- Chinese Name
- α-育亨宾
- Molecular Weight
- 354.443 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 270-280ºC |
|---|---|
| Boiling Point | 543.0±50.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 282.2±30.1 °C |
| Exact Mass | 354.194336 |
| PSA | 65.56000 |
| LogP | 2.20 |
| Vapor Pressure | 0.0±1.5 mmHg at 25°C |
| Refractive Index | 1.661 |
Activity & Biological Data
| Additional Information | [1]. A Bruzzone, et al. Alpha2-adrenoceptor action on cell proliferation and mammary tumour growth in mice. Br J Pharmacol. 2008 Oct;155(4):494-504. [2]. S La Marca, et al. The alpha-2 antagonists idazoxan and rauwolscine but not yohimbine or piperoxan are anxiolytic in the Vogel lick-shock conflict paradigm following intravenous administration. Life Sci. 1994;54(10):PL179-84. |
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Frequently Asked Questions
What is the CAS number of alpha-Yohimbine?
The CAS number of alpha-Yohimbine is 131-03-3.
What are the molecular formula and molecular weight of alpha-Yohimbine?
alpha-Yohimbine has molecular formula C21H26N2O3 and molecular weight 354.443 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "alpha-Yohimbine (CAS 131-03-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23230-0 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.