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2',7'-Dichlorodihydrofluorescein diacetate

Also known as: DCFH-DA, H2DCFDA, 2,7-Dichlorodihydrofluorescein diacetate, 2,7-Dichlorofluorescin diacetate, 2-(3,6-diacetoxy-2,7-dichloro-9H-xanthen-9-yl)benzoic acid, Leucodiacetyldichlorofluorescein, MFCD00128955

2',7'-Dichlorodihydrofluorescein diacetate (CAS 4091-99-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C24H16Cl2O7 and a molecular weight of 487.286 g/mol. Key properties include a melting point of 209-210ºC(lit.), a boiling point of 593.5±50.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 312.7±30.1 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4091-99-0
Jingsj CID
J-22886-4
Molecular Formula
C24H16Cl2O7
Molecular Weight
487.286 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point209-210ºC(lit.)
Boiling Point593.5±50.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point312.7±30.1 °C
Exact Mass486.027313
PSA99.13000
LogP4.62
Vapor Pressure0.0±1.8 mmHg at 25°C
Refractive Index1.635

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Activity & Biological Data

Additional Information[1]. Lyublinskaya OG, et al. Redox environment in stem and differentiated cells: A quantitative approach. Redox Biol. 2017 Aug;12:758-769.

Customs & Trade Information

HS Code2932999099
Summary2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 2',7'-Dichlorodihydrofluorescein diacetate?

The CAS number of 2',7'-Dichlorodihydrofluorescein diacetate is 4091-99-0.

What are the molecular formula and molecular weight of 2',7'-Dichlorodihydrofluorescein diacetate?

2',7'-Dichlorodihydrofluorescein diacetate has molecular formula C24H16Cl2O7 and molecular weight 487.286 g/mol.

Is 2',7'-Dichlorodihydrofluorescein diacetate hazardous?

2',7'-Dichlorodihydrofluorescein diacetate has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of 2',7'-Dichlorodihydrofluorescein diacetate?

For 2',7'-Dichlorodihydrofluorescein diacetate, Downstream Products: 2',7'-Dichlorofluorescein.

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

Last updated:

How to cite: Jingsj. "2',7'-Dichlorodihydrofluorescein diacetate (CAS 4091-99-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-22886-4 (accessed 2026-11-09).

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