1-Methyl-1-cyclopentene
1-Methyl-1-cyclopentene (CAS: 693-89-0, Formula: C6H10) is a cyclic alkene supplied by Tech Serve Solutions. With a molecular weight of 82.14 g/mol, this compound serves as a versatile building block in organic synthesis. Its applications span various chemical research and development sectors, contributing to the creation of complex molecules and novel materials.

Organic Synthesis Intermediate
1-Methyl-1-cyclopentene is utilized as a key intermediate in the synthesis of more complex organic compounds. Its reactive double bond allows for various addition reactions essential in multi-step synthetic pathways.
Building Block for Novel Materials
This cyclic alkene can be incorporated into polymer structures or used to synthesize monomers for advanced materials. Its structure offers unique properties for material science applications.
Research and Development
Primarily used in laboratory settings for research purposes, 1-Methyl-1-cyclopentene aids chemists in exploring new reaction mechanisms and developing innovative chemical processes.
| Molecular weight | 82.14 |
|---|---|
| Empirical formula | C6H10 |
| Assay | ≥96.0% (GC) |
| Boiling point | 75-77 °C(lit.) |
| Density | 0.778 g/mL at 20 °C(lit.) |
| Refractive index | n20/D 1.432 |


Hazard statements
- H225Highly flammable liquid and vapour
- H304May be fatal if swallowed and enters airways
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P301IF SWALLOWED
- P331Do NOT induce vomiting
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | -19 °C / -2.2 °F |
| Transport (UN / ADR) | UN 3295BF 3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,Xn |
| Risk statements (R) | 11-65 |
| Safety statements (S) | 16-62 |
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 1-Methyl-1-cyclopentene used for?
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1-Methyl-1-cyclopentene is primarily used as a building block in organic synthesis and in research and development for creating complex organic compounds and novel materials.
What is the CAS number and formula for 1-Methyl-1-cyclopentene?
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The CAS number for 1-Methyl-1-cyclopentene is 693-89-0, and its molecular formula is C6H10.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Methyl-1-cyclopentene with an assay of ≥96.0% (GC). TSS does not represent this product as USP, BP, EP, or other pharmacopoeia grades.
How is 1-Methyl-1-cyclopentene handled and shipped?
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1-Methyl-1-cyclopentene is a flammable liquid and vapour (H225) and may be fatal if swallowed or enters airways (H304). It requires careful handling, storage away from ignition sources, and appropriate personal protective equipment. It is shipped under UN 3295, Class 3, Packing Group II.
How can I request a quote or sample for 1-Methyl-1-cyclopentene?
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To request a quote or sample of 1-Methyl-1-cyclopentene, please contact our sales team through the website or by phone, providing your specific requirements.
Does 1-Methyl-1-cyclopentene require special storage?
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Yes, due to its flammability (H225), 1-Methyl-1-cyclopentene must be kept away from heat, sparks, open flames, and hot surfaces. Store in a well-ventilated place, and keep container tightly closed.
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