ESI-09

Also known as: ESI 09, ESI09, alpha-[(3-Chlorophenyl)hydrazono]-5-(1,1-dimethylethyl)-beta-oxo-3-isoxazolepropanenitrile, (E)-3-(5-tert-butylisoxazol-3-yl)-2-(2-(3-chlorophenyl)hydrazono)-3-oxopropanenitrile, 3-Isoxazolepropanenitrile, α-[2-(3-chlorophenyl)hydrazinylidene]-5-(1,1-dimethylethyl)-β-oxo-, α-[2-(3-Chlorophenyl)hydrazinylidene]-5-(1,1-dimethylethyl)-b-oxo-3-isoxazolepropanenitrile

ESI-09 (CAS 263707-16-0) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C16H15ClN4O2 and a molecular weight of 330.76900 g/mol. It is also known as ESI 09, ESI09 and alpha-[(3-Chlorophenyl)hydrazono]-5-(1,1-dimethylethyl)-beta-oxo-3-isoxazolepropanenitrile. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 263707-16-0
Jingsj CID: J-1987008-3
Molecular Formula: C₁₆H₁₅ClN₄O₂
Molecular Weight: 330.76900 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of ESI-09?

The CAS number of ESI-09 is 263707-16-0.

What are the molecular formula and molecular weight of ESI-09?

ESI-09 has molecular formula C16H15ClN4O2 and molecular weight 330.76900 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "ESI-09 (CAS 263707-16-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1987008-3 (accessed 2026-10-24).

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