2-Cyclopenten-1-one ethylene ketal
2-Cyclopenten-1-one ethylene ketal (CAS: 695-56-7; Formula: C7H10O2) is a valuable organic building block with a molecular weight of 126.15 g/mol. This acetal/ketal compound serves as a key intermediate in complex organic synthesis. It is particularly useful in the construction of cyclic organic molecules, finding application in the development of novel chemical structures and research endeavours. Tech Serve Solutions supplies this chemical for laboratory and industrial applications.
- IUPAC
- 1,4-Dioxaspiro[4.4]non-6-ene
- Synonyms
- 1,4-Dioxaspiro[4.4]non-6-ene

Organic Synthesis Intermediate
2-Cyclopenten-1-one ethylene ketal functions as a crucial intermediate in the synthesis of more complex organic molecules. It has been specifically documented for use in the preparation of substituted indanone derivatives.
Building Block for Heterocycles
As a cyclic ketal, this compound is an effective building block for the construction of various carbon skeletons. Its structure lends itself to the creation of oxygen-containing heterocycles and related fused ring systems.
Research and Development
This chemical is utilised in research laboratories for exploring new synthetic pathways and developing novel compounds. Its availability supports academic and industrial R&D efforts in organic chemistry.
| Molecular weight | 126.15 |
|---|---|
| Empirical formula | C7H10O2 |
| Assay | 95% |
| Boiling point | 59-62 °C/16 mmHg(lit.) |
| Density | 1.067 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.469(lit.) |
| Storage temperature | 2-8°C |
| Application | 2-Cyclopenten-1-one ethylene ketal was used in the synthesis of 2,3,3,4,7,7-hexahydro-5-methyl-ind-5-en-1-one ethylene ketal1. |

Hazard statements
- H226Flammable liquid and vapour
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 44 °C / 111.2 °F |
| Transport (UN / ADR) | UN 1993C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Risk statements (R) | 10 |
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 2-Cyclopenten-1-one ethylene ketal used for?
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2-Cyclopenten-1-one ethylene ketal is primarily used as an intermediate in organic synthesis, including the preparation of compounds like 2,3,3,4,7,7-hexahydro-5-methyl-ind-5-en-1-one ethylene ketal.
What is the CAS number and molecular formula?
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The CAS number for 2-Cyclopenten-1-one ethylene ketal is 695-56-7, and its molecular formula is C7H10O2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Cyclopenten-1-one ethylene ketal with an assay of 95%. We do not represent this product as USP, BP, or EP grade.
How should 2-Cyclopenten-1-one ethylene ketal be handled safely?
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This compound is flammable and requires careful handling. Wear appropriate personal protective equipment, including eyeshields, gloves, and suitable respiratory protection. Store at 2-8°C and keep away from ignition sources.
Is 2-Cyclopenten-1-one ethylene ketal a controlled substance?
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The provided data does not indicate that 2-Cyclopenten-1-one ethylene ketal is a controlled substance.
How is this chemical shipped and exported?
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2-Cyclopenten-1-one ethylene ketal is shipped according to relevant transport regulations, including UN 1993, Class 3, Packing Group III. We are experienced global suppliers and exporters.
How can I request a sample or quote?
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To request a sample or a quote for 2-Cyclopenten-1-one ethylene ketal, please contact our sales team via the website or provide your details through the online inquiry form.
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