Urapidil
Also known as: 6-[[3-[4-(2-Methoxyphenyl)-1-piperazinyl]propyl]amino]-1,3-dimethyluracil, 6-[[3-[4-(2-Methoxyphenyl)-1-piperazinyl]propyl]amino]-1,3-dimethyl-2,4(1H,3H)-pyrimidinedione, 6-[3-[4-(2-Methoxyphenyl)piperazin-1-yl]propylamino]-1,3-dimethylpyrimidine-2,4-dione, Ebrantil, Eupressyl, Uraprene, 1,3-Dimethyl-6-(3-(4-(o-methoxyphenyl)-1-piperazinyl)propylamino)uracil
Urapidil (CAS 34661-75-1) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C20H29N5O3 and a molecular weight of 387.476 g/mol. Key properties include a melting point of 159 °C, a boiling point of 549.0±60.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 285.8±32.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 34661-75-1
- Jingsj CID
- J-1331875-7
- Molecular Formula
- C20H29N5O3
- Molecular Weight
- 387.476 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 159 °C |
|---|---|
| Boiling Point | 549.0±60.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 285.8±32.9 °C |
| Exact Mass | 387.227051 |
| PSA | 71.74000 |
| LogP | 2.28 |
| Vapor Pressure | 0.0±1.5 mmHg at 25°C |
| Refractive Index | 1.622 |
Activity & Biological Data
| Target | α1 adrenoreceptor, 5-HT1A receptor[1] |
|---|---|
| Additional Information | [1]. Bopp C, et al. The effect of urapidil, an alpha-1 adrenoceptor antagonist and a 5-HT1A agonist, on the vascular tone of the porcine coronary and pulmonary arteries, the rat aorta and the human pulmonary artery. Eur J Pharmacol. 2016 May 15;779:53-8. |
Frequently Asked Questions
What is the CAS number of Urapidil?
The CAS number of Urapidil is 34661-75-1.
What are the molecular formula and molecular weight of Urapidil?
Urapidil has molecular formula C20H29N5O3 and molecular weight 387.476 g/mol.
What are the upstream and downstream products of Urapidil?
For Urapidil, Upstream Products: 1-(2-Methoxyphenyl)piperazine hydrochloride, 6-[(3-chloropropyl)amino]-1,3-dimethyluracil; Downstream Products: 1,3-Dimethylbarbituric acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Urapidil (CAS 34661-75-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1331875-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.