1-Ethynyl-2,4,5-trimethylbenzene

CAS 351002-92-1HC≡CC6H2(CH3)3Chemical Synthesis

1-Ethynyl-2,4,5-trimethylbenzene (CAS: 351002-92-1) is a substituted alkyne with the linear formula HC≡CC₆H₂(CH₃)₃ and a molecular weight of 144.21 g/mol. This organic compound serves as a valuable building block in chemical synthesis, particularly within organic chemistry research and development. Its terminal alkyne functionality allows for participation in a variety of coupling and addition reactions.

Synonyms: 351002-92-1HC≡CC₆H₂(CH₃)₃

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1-Ethynyl-2,4,5-trimethylbenzene (HC≡CC6H2(CH3)3) — chemical structure, CAS 351002-92-1; Chemistry, fine chemical supplied by Tech Serve Solutions

AlkynesBuilding BlocksChemical SynthesisOrganic Building BlocksTerminal

01 /Applications

Organic Synthesis Intermediate

This compound is utilized as a key intermediate in the synthesis of more complex organic molecules. The terminal alkyne group is amenable to numerous transformations, including Sonogashira couplings and click chemistry.

Building Block for Materials Science

As a functionalized aromatic alkyne, it can be incorporated into novel polymers or organic materials, potentially influencing their electronic or structural properties.

Research and Development

This chemical is employed in academic and industrial research settings for exploring new synthetic pathways and developing novel chemical entities.

02 /Properties

Molecular weight	144.21
Linear formula	HC≡CC6H2(CH3)3
Assay	97%
Storage temperature	2-8°C
Melting point	47-51 °C(lit.)

03 /Safety & handling

GHS hazard pictogram: Corrosive (GHS05) — Corrosive

Danger

Hazard statements

H318Causes serious eye damage

Precautionary statements

P280Wear protective gloves, clothing and eye/face protection
P305IF IN EYES

Protective equipment	dust mask type N95 (US), Eyeshields, Gloves
Water hazard class (WGK, DE)	3
Hazard codes (EU)	Xi
Risk statements (R)	41
Safety statements (S)	26-39

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

04 /Identifiers & registry

CAS number

351002-92-1

MDL number

MFCD05865154

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-Ethynyl-2,4,5-trimethylbenzene used for?

1-Ethynyl-2,4,5-trimethylbenzene is used as an intermediate and building block in organic synthesis and research & development.

What is the CAS number and formula for 1-Ethynyl-2,4,5-trimethylbenzene?

The CAS number is 351002-92-1 and the linear formula is HC≡CC₆H₂(CH₃)₃.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies 1-Ethynyl-2,4,5-trimethylbenzene with an assay of 97%. We do not represent this product as meeting USP, BP, or EP pharmacopoeial standards.

How should 1-Ethynyl-2,4,5-trimethylbenzene be handled safely?

This compound is classified as Danger (GHS05) and causes serious eye damage (H318). Handle with care, wearing a dust mask (type N95 US recommended), eyecups, and gloves. Ensure adequate ventilation and avoid contact with eyes. In case of eye contact, rinse cautiously with water for several minutes, removing contact lenses if present and easy to do. Continue rinsing.

How is 1-Ethynyl-2,4,5-trimethylbenzene packed and shipped?

1-Ethynyl-2,4,5-trimethylbenzene is stored at 2-8°C. Shipments are handled according to standard procedures for fine chemicals, adhering to all relevant shipping regulations.