1-Chloro-3,3,4,4,5,5-hexafluoro-2-methoxycyclopentene

CAS 336-34-5C6H3ClF6OChemical Synthesis

1-Chloro-3,3,4,4,5,5-hexafluoro-2-methoxycyclopentene (CAS: 336-34-5) is a fluorinated organic compound with the molecular formula C6H3ClF6O and a molecular weight of 240.53 g/mol. This volatile liquid, with a boiling point of 84°C, serves as a valuable building block in organic synthesis. It is primarily utilized in the preparation of perhalocyclopentanones and, more recently, in the synthesis of tetracarbocyanine dyes featuring fluorinated ring structures.

Synonyms: 4,5,5-hexafluoro-2-methoxycyclopenteneC6H3ClF6O

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1-Chloro-3,3,4,4,5,5-hexafluoro-2-methoxycyclopentene (C6H3ClF6O) — chemical structure, CAS 336-34-5; Chemistry, fine chemical supplied by Tech Serve Solutions

AlkenylBuilding BlocksChemical SynthesisHalogenated HydrocarbonsOrganic Building Blocks

01 /Applications

Synthesis of Perhalocyclopentanones

1-Chloro-3,3,4,4,5,5-hexafluoro-2-methoxycyclopentene is employed as a precursor in the synthesis of perhalocyclopentanone derivatives, contributing to the development of novel fluorinated cyclic compounds.

Preparation of Fluorinated Dyes

This compound is instrumental in the creation of tetracarbocyanine dyes, where the incorporation of fluorinated rings into the side chains imparts unique photophysical properties.

Organic Synthesis Building Block

As a halogenated hydrocarbon, it functions as a versatile building block in various organic synthesis pathways, enabling the introduction of fluorinated cyclopentene moieties into complex molecules.

02 /Properties

Molecular weight	240.53
Empirical formula	C6H3ClF6O
Assay	97%
Boiling point	84 °C(lit.)
Density	1.56 g/mL at 25 °C(lit.)
Refractive index	n20/D 1.376(lit.)
Application	Used in the preparation of perhalocyclopentanones1 and more recently to prepare tetracarbocyanine dyes with fluorinated rings in the side chain.2

03 /Safety & handling

GHS hazard pictogram: Flammable (GHS02) — Flammable

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Warning

Hazard statements

H226Flammable liquid and vapour
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust, fume, gas or vapours
P305IF IN EYES

Protective equipment	Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Flash point	49 °C / 120.2 °F
Transport (UN / ADR)	UN 1993C 3 / PGIII
Water hazard class (WGK, DE)	3
Hazard codes (EU)	Xi
Risk statements (R)	10-36/37/38
Safety statements (S)	16-26-36

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

336-34-5

MDL number

MFCD00674036

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is 1-Chloro-3,3,4,4,5,5-hexafluoro-2-methoxycyclopentene used for?

It is used in the preparation of perhalocyclopentanones and tetracarbocyanine dyes with fluorinated rings.

What is the CAS number and molecular formula for this compound?

The CAS number is 336-34-5 and the molecular formula is C6H3ClF6O.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies this chemical at 97% purity. It is supplied for research and laboratory use and is not represented as USP, EP, BP, or any other pharmacopoeia grade.

How should 1-Chloro-3,3,4,4,5,5-hexafluoro-2-methoxycyclopentene be handled safely?

This compound is a flammable liquid (flash point 49°C) and an irritant to skin, eyes, and respiratory tract. Handling requires appropriate personal protective equipment, including eyeshields, face shields, gloves, and a suitable respirator, in a well-ventilated area. Refer to the Safety Data Sheet for full details.

Can Tech Serve Solutions export this chemical?

Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, and can arrange export of this product.

How can I request a quote or sample?

To request a quote or sample, please contact the Tech Serve Solutions sales team via the website or by phone, providing the product name and CAS number.