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4-[(tert-Butyldimethylsilyl)oxy]benzaldehyde

Also known as: 4-(tert-Butyldimethylsiloxy)benzaldehyde, 4-(t-Butyldimethylsilyloxy)benzaldehyde, 4-((tert-Butyldimethylsilyl)oxy)benzaldehyde, 4-[tert-Butyl(dimethyl)silyl]oxybenzaldehyde, Benzaldehyde, 4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-, 4-Formylphenyl tert-butyldimethylsilyl ether, p-(tert-Butyldimethylsiloxy)benzaldehyde, tert-Butyldimethylsilyl 4-formylphenyl ether

4-[(tert-Butyldimethylsilyl)oxy]benzaldehyde (CAS 120743-99-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C13H20O2Si and a molecular weight of 236.38200 g/mol. Key properties include a boiling point of 224-226ºC(lit.), a density of 0.957 g/mL at 25ºC(lit.) and a flash point of >110.0 °C. It is classified under GHS with signal word Danger and hazard statements H318 — Causes serious eye damage and H413. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
120743-99-9
Jingsj CID
J-1444315-3
Molecular Formula
C13H20O2Si
Molecular Weight
236.38200 g/mol
Category
Aromatic Hydrocarbons
Last updated
11/3/2026

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Physicochemical Properties

Boiling Point224-226ºC(lit.)
Density0.957 g/mL at 25ºC(lit.)
Flash Point>110.0 °C
Exact Mass236.12300
PSA26.30000
LogP3.88310
Vapor Pressure0.00467mmHg at 25°C
Refractive Indexn20/D 1.5110(lit.)

GHS Safety & Compliance

CorrosionSignal word: Danger
  • H318 — Causes serious eye damage
  • H413

Frequently Asked Questions

What is the CAS number of 4-[(tert-Butyldimethylsilyl)oxy]benzaldehyde?

The CAS number of 4-[(tert-Butyldimethylsilyl)oxy]benzaldehyde is 120743-99-9.

What are the molecular formula and molecular weight of 4-[(tert-Butyldimethylsilyl)oxy]benzaldehyde?

4-[(tert-Butyldimethylsilyl)oxy]benzaldehyde has molecular formula C13H20O2Si and molecular weight 236.38200 g/mol.

Is 4-[(tert-Butyldimethylsilyl)oxy]benzaldehyde hazardous?

4-[(tert-Butyldimethylsilyl)oxy]benzaldehyde has GHS signal word Danger and hazard statements H318 — Causes serious eye damage; H413.

What are the upstream and downstream products of 4-[(tert-Butyldimethylsilyl)oxy]benzaldehyde?

For 4-[(tert-Butyldimethylsilyl)oxy]benzaldehyde, Upstream Products: 4-Hydroxybenzaldehyde, tert-Butyldimethylchlorosilane, tert-Butyl[4-(dimethoxymethyl)phenoxy]dimethylsilane; Downstream Products: Coelenterazine, (Z)-Pterostilbene, Pterostilbene.

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-[(tert-Butyldimethylsilyl)oxy]benzaldehyde (CAS 120743-99-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1444315-3 (accessed 2026-11-09).

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