Fluorescein octadecyl ester

Also known as: Octadecyl fluorescein, ETH 7061, Chromionophore XI, Fluorescein octadecyl ester, lipophilic fluorescent pH indicator

Fluorescein octadecyl ester (CAS 138833-46-2) is a compound in the Esters category listed in the Jingsj chemical database. It has the molecular formula C38H48O5 and a molecular weight of 584.78500 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 138833-46-2
Jingsj CID: J-1962486-6
Molecular Formula: C₃₈H₄₈O₅
Molecular Weight: 584.78500 g/mol
Category: Esters
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Exact Mass	584.35000
PSA	76.74000
LogP	10.68870
Storage Conditions	2-8°C

Activity & Biological Data

Additional Information	[1]. Zeng HH, et al. Development of an alcohol optode membrane based on fluorescence enhancement of fluorescein derivatives. Talanta. 1994 Jun;41(6):969-75. [2]. Hui-HuiZeng, et al. Development of an optrode membrane for the determination of picric acid based on fluorescence energy transfer. 1994, 271-277.

Frequently Asked Questions

What is the CAS number of Fluorescein octadecyl ester?

The CAS number of Fluorescein octadecyl ester is 138833-46-2.

What are the molecular formula and molecular weight of Fluorescein octadecyl ester?

Fluorescein octadecyl ester has molecular formula C38H48O5 and molecular weight 584.78500 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Fluorescein octadecyl ester (CAS 138833-46-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1962486-6 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.