Cyproheptadine
赛庚啶
Also known as: Periactin, Periactine, Periactinol, Dronactin, MK 141, 1-Methyl-4-(5H-dibenzo[a,d]cycloheptenylidene)piperidine, 4-(5H-Dibenzo[a,d][7]annulen-5-ylidene)-1-methylpiperidine, Cyproheptadiene
Cyproheptadine (CAS 129-03-3) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C21H22ClN and a molecular weight of 323.85900 g/mol. It is also known as Periactin, Periactine and Periactinol. Key properties include a melting point of 298 °C (dec.)(lit.), a boiling point of 440.1ºC at 760mmHg, a density of 1.115g/cm3 and a flash point of 194.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 129-03-3
- Jingsj CID
- J-30337-6
- Molecular Formula
- C21H22ClN
- Chinese Name
- 赛庚啶
- Molecular Weight
- 323.85900 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 298 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 440.1ºC at 760mmHg |
| Density | 1.115g/cm3 |
| Flash Point | 194.5ºC |
Frequently Asked Questions
What is the CAS number of Cyproheptadine?
The CAS number of Cyproheptadine is 129-03-3.
What are the molecular formula and molecular weight of Cyproheptadine?
Cyproheptadine has molecular formula C21H22ClN and molecular weight 323.85900 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Cyproheptadine (CAS 129-03-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30337-6 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.