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Fluorescein-5-maleimide

Also known as: 5-Maleimido-fluorescein, 5-MF, N-(5-Fluoresceinyl)maleimide, 1-(3',6'-Dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)-1H-pyrrole-2,5-dione, Fluorescein maleimide

Fluorescein-5-maleimide (CAS 75350-46-8) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C24H13NO7 and a molecular weight of 427.362 g/mol. Key properties include a melting point of >275ºC (dec.), a boiling point of 769.1±60.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 418.9±32.9 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
75350-46-8
Jingsj CID
J-10021-0
Molecular Formula
C24H13NO7
Molecular Weight
427.362 g/mol
Category
Organic Bases
Last updated
11/3/2026

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Physicochemical Properties

Melting Point>275ºC (dec.)
Boiling Point769.1±60.0 °C at 760 mmHg
Density1.7±0.1 g/cm3
Flash Point418.9±32.9 °C
Exact Mass427.069214
PSA113.37000
LogP1.85
Vapor Pressure0.0±2.7 mmHg at 25°C
Refractive Index1.835

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed

Frequently Asked Questions

What is the CAS number of Fluorescein-5-maleimide?

The CAS number of Fluorescein-5-maleimide is 75350-46-8.

What are the molecular formula and molecular weight of Fluorescein-5-maleimide?

Fluorescein-5-maleimide has molecular formula C24H13NO7 and molecular weight 427.362 g/mol.

Is Fluorescein-5-maleimide hazardous?

Fluorescein-5-maleimide has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.

What are the upstream and downstream products of Fluorescein-5-maleimide?

For Fluorescein-5-maleimide, Upstream Products: 5-Aminofluorescein.

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

Last updated:

How to cite: Jingsj. "Fluorescein-5-maleimide (CAS 75350-46-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-10021-0 (accessed 2026-11-09).

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