1-(Trimethylsiloxy)cyclopentene

CAS 19980-43-9C5H7OSi(CH3)3Chemical Synthesis

1-(Trimethylsiloxy)cyclopentene (CAS: 19980-43-9) is a versatile organosilicon compound with the molecular formula C5H7OSi(CH3)3 and a molecular weight of 156.30 g/mol. This enol ether serves as a valuable building block in organic synthesis. Its utility extends to chemical research and the development of novel compounds, making it an important reagent for chemists.

IUPAC: 1-Cyclopentenyloxytrimethylsilane,Cyclopentanone enol trimethyl silyl ether

Email us

1-(Trimethylsiloxy)cyclopentene (C5H7OSi(CH3)3) — chemical structure, CAS 19980-43-9; Chemistry, fine chemical supplied by Tech Serve Solutions

Building BlocksChemical SynthesisEnol EthersOrganic Building BlocksOxygen Compounds

01 /Applications

Organic Synthesis Reagent

1-(Trimethylsiloxy)cyclopentene acts as a useful building block in organic synthesis. It can be employed in various chemical transformations to construct more complex molecules.

Chemical Research

This compound is utilised in laboratory settings for research purposes. It aids in exploring new synthetic pathways and understanding reaction mechanisms.

Enol Ether Chemistry

As an enol ether derivative of cyclopentanone, it participates in reactions characteristic of this functional group, offering specific reactivity in synthetic strategies.

02 /Properties

Molecular weight	156.30
Linear formula	C5H7OSi(CH3)3
Assay	97%
Boiling point	45 °C/11 mmHg(lit.)
Density	0.878 g/mL at 25 °C(lit.)
Refractive index	n20/D 1.440(lit.)
Application	1-(Trimethylsiloxy)cyclopentene may be used in chemical synthesis studies.

03 /Safety & handling

GHS hazard pictogram: Flammable (GHS02) — Flammable

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Warning

Hazard statements

H226Flammable liquid and vapour
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust, fume, gas or vapours
P305IF IN EYES

Protective equipment	Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Flash point	36 °C / 96.8 °F
Transport (UN / ADR)	UN 1993C 3 / PGIII
Water hazard class (WGK, DE)	3
Hazard codes (EU)	Xi
Risk statements (R)	10-36/37/38
Safety statements (S)	26-36

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

04 /Identifiers & registry

CAS number

19980-43-9

MDL number

MFCD00001395

PubChem substance

24857085

Beilstein registry

385956

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-(Trimethylsiloxy)cyclopentene used for?

1-(Trimethylsiloxy)cyclopentene is primarily used as a building block in chemical synthesis and for research purposes in organic chemistry.

What is the CAS number and chemical formula for 1-(Trimethylsiloxy)cyclopentene?

The CAS number is 19980-43-9 and the chemical formula is C5H7OSi(CH3)3.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies 1-(Trimethylsiloxy)cyclopentene with an assay of 97%. We do not represent this product as USP, BP, or EP grade.

What are the safety considerations when handling 1-(Trimethylsiloxy)cyclopentene?

1-(Trimethylsiloxy)cyclopentene is a flammable liquid and vapour (H226). It can cause skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment, including eyeshields, gloves, and suitable respiratory protection, should be used.