Clemastine
Also known as: clemastinum, (2R)-2-[2-[(1R)-1-(4-chlorophenyl)-1-phenylethoxy]ethyl]-1-methylpyrrolidine, Pyrrolidine, 2-[2-[(p-chloro-α-methyl-α-phenylbenzyl)oxy]ethyl]-1-methyl-, (+)-, MFCD00137486, EINECS 239-055-2
Clemastine (CAS 15686-51-8) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C21H26ClNO and a molecular weight of 343.89000 g/mol. Key properties include a boiling point of 425.2ºC at 760mmHg, a density of 1.097 g/cm3 and a flash point of 211ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 15686-51-8
- Jingsj CID
- J-1958954-1
- Molecular Formula
- C21H26ClNO
- Molecular Weight
- 343.89000 g/mol
- Category
- Organohalogen Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 425.2ºC at 760mmHg |
|---|---|
| Density | 1.097 g/cm3 |
| Flash Point | 211ºC |
| Exact Mass | 343.17000 |
| PSA | 12.47000 |
| LogP | 5.04230 |
| Refractive Index | 1.553 |
Activity & Biological Data
| Additional Information | [1]. Clemastine. In: LiverTox: Clinical and Research Information on Drug-Induced Liver Injury. Bethesda (MD): National Institute of Diabetes and Digestive and Kidney Diseases; January 16, 2017. |
|---|
Frequently Asked Questions
What is the CAS number of Clemastine?
The CAS number of Clemastine is 15686-51-8.
What are the molecular formula and molecular weight of Clemastine?
Clemastine has molecular formula C21H26ClNO and molecular weight 343.89000 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Clemastine (CAS 15686-51-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1958954-1 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.