4-Methyl-2-pentyne

CAS 21020-27-9CH3CH(CH3)C≡CCH3Chemical Synthesis

4-Methyl-2-pentyne (CAS 21020-27-9) is an organic compound with the molecular formula C6H10 and a molecular weight of 82.14 g/mol. This internal alkyne serves as a valuable building block in organic synthesis. It is characterised by its specific chemical structure and reactivity, making it a useful reagent for various chemical transformations. Available from Tech Serve Solutions, it is suitable for research and development purposes.

Email us

4-Methyl-2-pentyne (CH3CH(CH3)C≡CCH3) — chemical structure, CAS 21020-27-9; Chemistry, fine chemical supplied by Tech Serve Solutions

AlkynesBuilding BlocksChemical SynthesisInternalOrganic Building Blocks

01 /Applications

Organic Synthesis Intermediate

4-Methyl-2-pentyne acts as a key intermediate in the synthesis of more complex organic molecules. Its alkyne functionality allows for diverse reactions, including addition and cycloaddition reactions, facilitating the construction of novel chemical entities.

Chemical Research and Development

Utilised in R&D laboratories, this compound is employed for exploring new synthetic pathways and developing innovative chemical processes. Its defined structure and purity support reliable experimental outcomes.

Building Block for Specialty Chemicals

As a versatile building block, 4-Methyl-2-pentyne can be incorporated into the synthesis of specialty chemicals. Its application spans various fields requiring tailor-made organic compounds with specific functional groups.

02 /Properties

Molecular weight	82.14
Linear formula	CH3CH(CH3)C≡CCH3
Assay	96%
Boiling point	71-73 °C(lit.)
Density	0.711 g/mL at 25 °C(lit.)
Refractive index	n20/D 1.407(lit.)

03 /Safety & handling

GHS hazard pictogram: Flammable (GHS02) — Flammable

Danger

Hazard statements

H225Highly flammable liquid and vapour

Precautionary statements

P210Keep away from heat, sparks and open flames. No smoking

Protective equipment	Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Flash point	-12 °C / 10.4 °F
Transport (UN / ADR)	UN 3295BE 3 / PGII
Water hazard class (WGK, DE)	3
Hazard codes (EU)	F
Risk statements (R)	11
Safety statements (S)	16-23-24/25

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

04 /Identifiers & registry

CAS number

21020-27-9

MDL number

MFCD00041615

PubChem substance

24883631

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 4-Methyl-2-pentyne used for?

4-Methyl-2-pentyne is primarily used as a building block and intermediate in organic synthesis and chemical research and development.

What is the CAS number and chemical formula for 4-Methyl-2-pentyne?

The CAS number is 21020-27-9 and the linear chemical formula is CH3CH(CH3)C≡CCH3.

What grade and purity does Tech Serve Solutions supply for 4-Methyl-2-pentyne?

Tech Serve Solutions supplies 4-Methyl-2-pentyne with an assay of 96%. This is a technical/research grade, and TSS does not represent it as USP, BP, or EP grade.

How should 4-Methyl-2-pentyne be handled safely?

4-Methyl-2-pentyne is a highly flammable liquid and vapour (H225). Handle with appropriate personal protective equipment, including eyeshields, gloves, and suitable respiratory protection, in a well-ventilated area away from ignition sources.