Azatadine

阿扎他啶

Also known as: 6,11-Dihydro-11-(1-methyl-4-piperidinylidene)-5H-benzo[5,6]cyclohepta[1,2-b]pyridine, 11-(1-Methylpiperidin-4-ylidene)-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine, Desloratadine Impurity 25, Optimine, Zadine

Azatadine (CAS 3964-81-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C20H22N2 and a molecular weight of 290.40 g/mol. It is also known as 6,11-Dihydro-11-(1-methyl-4-piperidinylidene)-5H-benzo[5,6]cyclohepta[1,2-b]pyridine, 11-(1-Methylpiperidin-4-ylidene)-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine and Desloratadine Impurity 25. Key properties include a melting point of 124-126ºC, a boiling point of 450.1ºC at 760 mmHg, a density of 1.127 g/cm3 and a flash point of 226ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
3964-81-6
Jingsj CID
J-1979999-3
Molecular Formula
C20H22N2
Chinese Name
阿扎他啶
Molecular Weight
290.40 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point124-126ºC
Boiling Point450.1ºC at 760 mmHg
Density1.127 g/cm3
Flash Point226ºC

Frequently Asked Questions

What is the CAS number of Azatadine?

The CAS number of Azatadine is 3964-81-6.

What are the molecular formula and molecular weight of Azatadine?

Azatadine has molecular formula C20H22N2 and molecular weight 290.40 g/mol.

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

Last updated:

How to cite: Jingsj. "Azatadine (CAS 3964-81-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1979999-3 (accessed 2026-10-22).

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