(3-Methoxyphenylethynyl)trimethylsilane
(3-Methoxyphenylethynyl)trimethylsilane (CAS: 40230-92-0), a valuable organic building block with the molecular formula C10H12O2Si and a molecular weight of 204.34 g/mol, is offered by Tech Serve Solutions. This trimethylsilyl-protected alkyne is instrumental in various chemical synthesis pathways. It serves as a key intermediate and versatile reagent in organic chemistry research and development, enabling the construction of complex molecular architectures.

Organic Synthesis Intermediate
Utilised as a building block in the synthesis of complex organic molecules. Its protected alkyne functionality allows for selective reactions in multi-step synthetic routes.
Material Science Research
Potential applications in the development of novel materials where the ethynyl and methoxyphenyl functionalities can be incorporated into polymer backbones or functionalised surfaces.
Pharmaceutical Research
Serves as a precursor or intermediate in the synthesis of potential pharmaceutical compounds. The structural motif can be found in various bioactive molecules.
| Molecular weight | 204.34 |
|---|---|
| Linear formula | C6H4OCH3C≡CSi(CH3)3 |
| Assay | 97% |
| Boiling point | 65-70 °C/0.1 mmHg(lit.) |
| Density | 0.940 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.5360(lit.) |

Hazard statements
- H226Flammable liquid and vapour
| Protective equipment | Eyeshields, Gloves, half-mask respirator (EU), half-mask respirator (US), multi-purpose combination respirator cartridge (US) |
|---|---|
| Flash point | 57 °C / 134.6 °F |
| Transport (UN / ADR) | UN 1993C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
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.
What is (3-Methoxyphenylethynyl)trimethylsilane used for?
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This compound is primarily used as a versatile building block in organic synthesis, particularly in the construction of complex organic molecules and as an intermediate in pharmaceutical and material science research.
What is the CAS number and molecular formula?
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The CAS number for (3-Methoxyphenylethynyl)trimethylsilane is 40230-92-0, and its molecular formula is C10H12O2Si.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies (3-Methoxyphenylethynyl)trimethylsilane with an assay of 97%. We do not represent this product as USP, BP, EP or other pharmacopoeia grades.
How should (3-Methoxyphenylethynyl)trimethylsilane be handled safely?
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This compound is classified as flammable liquid and vapour (H226) and requires careful handling. Use appropriate personal protective equipment including eyeshields and gloves. Ensure adequate ventilation and avoid ignition sources.
How is this chemical exported and shipped?
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Tech Serve Solutions exports and ships (3-Methoxyphenylethynyl)trimethylsilane, adhering to all relevant transportation regulations. It is classified under UN 1993, Hazard Class C3, Packing Group III.
How can I request a sample or quote for this product?
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To request a sample or a quote for (3-Methoxyphenylethynyl)trimethylsilane, please contact our sales team through the website or by phone.
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