![Molecular structure of 4-[(Trimethylsilyl)ethynyl]benzaldehyde (CAS 77123-57-0)](/images/chem_structures_svg/112/77123-57-0.svg)
4-[(Trimethylsilyl)ethynyl]benzaldehyde
Also known as: 4-(2-Trimethylsilylethynyl)benzaldehyde, 4-(Trimethylsilyl)ethynylbenzaldehyde, 4-[(Trimethylsilyl)ethynyl]benzaldehyde 97%, Benzaldehyde, 4-[(trimethylsilyl)ethynyl]-, Benzaldehyde, 4-[2-(trimethylsilyl)ethynyl]-, MFCD02093765
4-[(Trimethylsilyl)ethynyl]benzaldehyde (CAS 77123-57-0) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H14OSi and a molecular weight of 202.32400 g/mol. Key properties include a melting point of 66-70ºC, a boiling point of 262.1ºC at 760 mmHg, a density of 0.98g/cm3 and a flash point of 112.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 77123-57-0
- Jingsj CID
- J-1990471-3
- Molecular Formula
- C12H14OSi
- Molecular Weight
- 202.32400 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 66-70ºC |
|---|---|
| Boiling Point | 262.1ºC at 760 mmHg |
| Density | 0.98g/cm3 |
| Flash Point | 112.3ºC |
| Exact Mass | 202.08100 |
| PSA | 17.07000 |
| LogP | 2.72800 |
| Refractive Index | 1.514 |
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 4-[(Trimethylsilyl)ethynyl]benzaldehyde?
The CAS number of 4-[(Trimethylsilyl)ethynyl]benzaldehyde is 77123-57-0.
What are the molecular formula and molecular weight of 4-[(Trimethylsilyl)ethynyl]benzaldehyde?
4-[(Trimethylsilyl)ethynyl]benzaldehyde has molecular formula C12H14OSi and molecular weight 202.32400 g/mol.
What are the upstream and downstream products of 4-[(Trimethylsilyl)ethynyl]benzaldehyde?
For 4-[(Trimethylsilyl)ethynyl]benzaldehyde, Upstream Products: 4-Bromobenzaldehyde, Trimethylsilylacetylene, 4-Iodobenzaldehyde; Downstream Products: N-(4-chlorobenzyl)(4-ethynylphenyl)methanamine, 4-Ethynylbenzaldehyde, (4-Ethynylphenyl)methanol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-[(Trimethylsilyl)ethynyl]benzaldehyde (CAS 77123-57-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1990471-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.