Cyproheptadine hydrochloride sesquihydrate

盐酸赛庚啶倍半水合物

Also known as: Cyproheptadine hydrochloride hydrate (2:2:3), Cyproheptadine HCl sesquihydrate, Piperidine, 4-(5H-dibenzo[a,d]cyclohepten-5-ylidene)-1-methyl-, hydrochloride, hydrate (2:2:3), Periactin (sesquihydrate form), 4-(5H-Dibenzo[a,d]cyclohepten-5-ylidene)-1-methylpiperidine hydrochloride sesquihydrate

Cyproheptadine hydrochloride sesquihydrate (CAS 41354-29-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C21H21N.3/2H2O.HCl and a molecular weight of 350.88 g/mol. It is also known as Cyproheptadine hydrochloride hydrate (2:2:3), Cyproheptadine HCl sesquihydrate and Piperidine, 4-(5H-dibenzo[a,d]cyclohepten-5-ylidene)-1-methyl-, hydrochloride, hydrate (2:2:3). Key properties include a melting point of 165 °C (dec.)(lit.), a boiling point of 440.1ºC at 760 mmHg and a flash point of 194.5ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
41354-29-4
Jingsj CID
J-26490-1
Molecular Formula
C21H21N32H2OHCl
Chinese Name
盐酸赛庚啶倍半水合物
Molecular Weight
350.88 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point165 °C (dec.)(lit.)
Boiling Point440.1ºC at 760 mmHg
Flash Point194.5ºC

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of Cyproheptadine hydrochloride sesquihydrate?

The CAS number of Cyproheptadine hydrochloride sesquihydrate is 41354-29-4.

What are the molecular formula and molecular weight of Cyproheptadine hydrochloride sesquihydrate?

Cyproheptadine hydrochloride sesquihydrate has molecular formula C21H21N.3/2H2O.HCl and molecular weight 350.88 g/mol.

Is Cyproheptadine hydrochloride sesquihydrate hazardous?

Cyproheptadine hydrochloride sesquihydrate has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "Cyproheptadine hydrochloride sesquihydrate (CAS 41354-29-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26490-1 (accessed 2026-10-24).

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