6-Carboxyfluorescein succinimidyl ester

Also known as: 6-FAM, SE, 6-FAM NHS ester, 6-FAM-NHS, 6-Carboxyfluorescein N-succinimidyl ester, 6-Carboxyfluorescein N-hydroxysuccinimide ester, 6-Carboxyfluorescein-NHS, 6-Carboxyfluorescein succinimide ester, (2,5-dioxopyrrolidin-1-yl) 3',6'-dihydroxy-1-oxospiro[2-benzofuran-3,9'-xanthene]-5-carboxylate, 1-{[(3',6'-Dihydroxy-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthen]-6-yl)carbonyl]oxy}-2,5-pyrrolidinedione, 1-{[(3',6'-Dihydroxy-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthen]-6-yl)carbonyl]oxy}pyrrolidine-2,5-dione

6-Carboxyfluorescein succinimidyl ester (CAS 92557-81-8) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C25H15NO9 and a molecular weight of 473.388 g/mol. Key properties include a boiling point of 788.1±70.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 430.4±35.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 92557-81-8
Jingsj CID: J-6170-1
Molecular Formula: C₂₅H₁₅NO₉
Molecular Weight: 473.388 g/mol
Category: Organic Bases
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	788.1±70.0 °C at 760 mmHg
Density	1.7±0.1 g/cm3
Flash Point	430.4±35.7 °C
Exact Mass	473.074677
PSA	139.67000
LogP	0.71
Vapor Pressure	0.0±2.8 mmHg at 25°C
Refractive Index	1.790

Customs & Trade Information

HS Code	2925290090
Summary	2925290090 other imines and their derivatives; salts thereof。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 6-Carboxyfluorescein succinimidyl ester?

The CAS number of 6-Carboxyfluorescein succinimidyl ester is 92557-81-8.

What are the molecular formula and molecular weight of 6-Carboxyfluorescein succinimidyl ester?

6-Carboxyfluorescein succinimidyl ester has molecular formula C25H15NO9 and molecular weight 473.388 g/mol.

What are the upstream and downstream products of 6-Carboxyfluorescein succinimidyl ester?

For 6-Carboxyfluorescein succinimidyl ester, Upstream Products: N-Hydroxysuccinimide, 6-Carboxyfluorescein.

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. "6-Carboxyfluorescein succinimidyl ester (CAS 92557-81-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6170-1 (accessed 2026-11-09).

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