2-[(Trimethylsilyl)ethynyl]anisole

Also known as: [(2-Methoxyphenyl)ethynyl](trimethyl)silane, (2-(2-methoxyphenyl)ethynyl)trimethylsilane, 1-Methoxy-2-[2-(trimethylsilyl)ethynyl]benzene, 2-Methoxy-1-(trimethylsilylethynyl)benzene, Benzene, 1-methoxy-2-[2-(trimethylsilyl)ethynyl]-, MFCD04039988, 1-trimethylsilyl-2-(2'-methoxyphenyl)ethyne, 2-methoxyphenyl trimethylsilyl acetylene

2-[(Trimethylsilyl)ethynyl]anisole (CAS 40230-91-9) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C12H16OSi and a molecular weight of 204.340 g/mol. Key properties include a boiling point of 252.0±32.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 82.7±25.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 40230-91-9
Jingsj CID: J-10926-2
Molecular Formula: C₁₂H₁₆OSi
Molecular Weight: 204.340 g/mol
Category: Ethers
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	252.0±32.0 °C at 760 mmHg
Density	1.0±0.1 g/cm3
Flash Point	82.7±25.5 °C
Exact Mass	204.097046
PSA	9.23000
LogP	4.37
Vapor Pressure	0.0±0.5 mmHg at 25°C
Refractive Index	1.502

Customs & Trade Information

HS Code	2931900090
Summary	2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-[(Trimethylsilyl)ethynyl]anisole?

The CAS number of 2-[(Trimethylsilyl)ethynyl]anisole is 40230-91-9.

What are the molecular formula and molecular weight of 2-[(Trimethylsilyl)ethynyl]anisole?

2-[(Trimethylsilyl)ethynyl]anisole has molecular formula C12H16OSi and molecular weight 204.340 g/mol.

What are the upstream and downstream products of 2-[(Trimethylsilyl)ethynyl]anisole?

For 2-[(Trimethylsilyl)ethynyl]anisole, Upstream Products: 2-iodoanisole, Trimethylsilylacetylene, 2-Bromoanisole; Downstream Products: 1-ethynyl-2-methoxybenzene, 1-Methoxy-2-(phenylethynyl)benzene.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2-[(Trimethylsilyl)ethynyl]anisole (CAS 40230-91-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-10926-2 (accessed 2026-11-09).

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