4,4-Dimethyl-2-cyclopenten-1-one

CAS 22748-16-9(CH3)2C5H4(=O)Chemical Synthesis

4,4-Dimethyl-2-cyclopenten-1-one (CAS: 22748-16-9) is a cyclic ketone with the molecular formula C7H10O and a molar mass of 110.15 g/mol. This organic building block is characterised by its reactive carbonyl group and alkene functionality. It serves as a valuable intermediate in organic synthesis, particularly in the creation of more complex molecular structures within chemical research and development laboratories.

Synonyms: (CH3)2C5H4(=O)

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4,4-Dimethyl-2-cyclopenten-1-one ((CH3)2C5H4(=O)) — chemical structure, CAS 22748-16-9; Chemistry, fine chemical supplied by Tech Serve Solutions

Building BlocksC7 to C8Carbonyl CompoundsChemical SynthesisKetones

01 /Applications

Organic Synthesis Intermediate

Utilised as a key building block in multi-step syntheses, enabling the construction of novel organic molecules and complex chemical architectures.

Research and Development

Employed in academic and industrial R&D settings for exploring new chemical reactions and developing innovative materials or compounds.

Carbonyl Compound Chemistry

Its ketone functionality makes it a substrate for reactions typical of carbonyl compounds, facilitating diverse chemical transformations.

02 /Properties

Molecular weight	110.15
Linear formula	(CH3)2C5H4(=O)
Assay	99%
Boiling point	158 °C(lit.)
Density	0.903 g/mL at 25 °C(lit.)
Refractive index	n20/D 1.457(lit.)

03 /Safety & handling

GHS hazard pictogram: Flammable (GHS02) — Flammable

Warning

Hazard statements

H226Flammable liquid and vapour

Protective equipment	Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Flash point	46 °C / 114.8 °F
Transport (UN / ADR)	UN 1224C 3 / PGIII
Water hazard class (WGK, DE)	3
Risk statements (R)	10
Safety statements (S)	16

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

04 /Identifiers & registry

CAS number

22748-16-9

MDL number

MFCD00075081

PubChem substance

24860390

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 4,4-Dimethyl-2-cyclopenten-1-one used for?

4,4-Dimethyl-2-cyclopenten-1-one is primarily used as an intermediate in organic synthesis and in research and development laboratories for creating new chemical entities.

What are the CAS number and chemical formula for 4,4-Dimethyl-2-cyclopenten-1-one?

The CAS number is 22748-16-9, and its linear formula is (CH3)2C5H4(=O).

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies 4,4-Dimethyl-2-cyclopenten-1-one with a minimum assay of 99%. This product is intended for research and chemical synthesis purposes and is not represented as USP, EP, BP, or food grade.

How should 4,4-Dimethyl-2-cyclopenten-1-one be handled safely?

4,4-Dimethyl-2-cyclopenten-1-one is a flammable liquid and vapour (H226). Handle with appropriate personal protective equipment including eyeshields, gloves, and ensure adequate ventilation. Store away from ignition sources.

How is 4,4-Dimethyl-2-cyclopenten-1-one packed and shipped?

This chemical is shipped in accordance with regulations for flammable liquids (UN 1224, Class 3, PGIII). Packing is suitable for export and laboratory use.