Ajmalicine hydrochloride

萝巴新

Also known as: Raubasine hydrochloride, δ-Yohimbine hydrochloride, D-Yohimbine, Circolene, Tetrahydroserpentine, Lamuran, Methyl (19α)-19-methyl-16,17-didehydro-18-oxayohimban-16-carboxylate, Methyl (4S,4aR,13bS,14aS)-4-methyl-4a,5,7,8,13,13b,14,14a-octahydro-4H-indolo[2,3-a]pyrano[3,4-g]quinolizine-1-carboxylate, Oxayohimban-16-carboxylic acid, 16,17-didehydro-19-methyl-, methyl ester, (19α)-, ajmalicine, monohydrochloride, Einecs 224-471-9, gamma-yohimbine hydrochloride, Pytetrahydroserpentine, AJMALICINE HCL

Ajmalicine hydrochloride (CAS 4373-34-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C21H24N2O3 and a molecular weight of 352.427 g/mol. It is also known as Raubasine hydrochloride, δ-Yohimbine hydrochloride and D-Yohimbine. Key properties include a melting point of 275-300ºC, a boiling point of 524.0±50.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 270.7±30.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4373-34-6
Jingsj CID: J-1963245-0
Molecular Formula: C₂₁H₂₄N₂O₃
Chinese Name: 萝巴新
Molecular Weight: 352.427 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	275-300ºC
Boiling Point	524.0±50.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	270.7±30.1 °C
Exact Mass	352.178680
PSA	54.56000
LogP	2.88
Vapor Pressure	0.0±1.4 mmHg at 25°C
Refractive Index	1.656

Activity & Biological Data

Target	α1-adrenergic receptor α2-adrenergic receptor
Additional Information	[1]. Roquebert J, et al. Inhibition of the alpha 1 and alpha 2-adrenoceptor-mediated pressor response in pithed rats by raubasine, tetrahydroalstonine and akuammigine. Eur J Pharmacol. 1984 Oct 30;106(1):203-5. [2]. Pereira DM, et al. Pharmacological effects of Catharanthus roseus root alkaloids in acetylcholinesterase inhibition and cholinergic neurotransmission. Phytomedicine. 2010 Jul;17(8-9):646-52. [3]. Demichel P, et al. Effects of raubasine stereoisomers on pre- and postsynaptic alpha-adrenoceptors in the rat vas deferens. Br J Pharmacol. 1984 Oct;83(2):505-10

Target

α1-adrenergic receptor α2-adrenergic receptor

Additional Information

[1]. Roquebert J, et al. Inhibition of the alpha 1 and alpha 2-adrenoceptor-mediated pressor response in pithed rats by raubasine, tetrahydroalstonine and akuammigine. Eur J Pharmacol. 1984 Oct 30;106(1):203-5. [2]. Pereira DM, et al. Pharmacological effects of Catharanthus roseus root alkaloids in acetylcholinesterase inhibition and cholinergic neurotransmission. Phytomedicine. 2010 Jul;17(8-9):646-52. [3]. Demichel P, et al. Effects of raubasine stereoisomers on pre- and postsynaptic alpha-adrenoceptors in the rat vas deferens. Br J Pharmacol. 1984 Oct;83(2):505-10

Frequently Asked Questions

What is the CAS number of Ajmalicine hydrochloride?

The CAS number of Ajmalicine hydrochloride is 4373-34-6.

What are the molecular formula and molecular weight of Ajmalicine hydrochloride?

Ajmalicine hydrochloride has molecular formula C21H24N2O3 and molecular weight 352.427 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Ajmalicine hydrochloride (CAS 4373-34-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1963245-0 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.