cis-4-Methyl-2-pentene

cis‑4‑Methyl‑2‑pentene (CAS NO: 691-38-3)

cis‑4‑Methyl‑2‑pentene (IUPAC: (2Z)-4‑methylpent‑2‑ene) is a stereochemically defined alkene characterized by its Z-configuration. As a volatile, unsaturated hydrocarbon, it’s highly sought-after in R&D settings where cis-selective reactions, structural isomer testing, or substituted olefin pathways are required. This compound serves as a flexible synthetic intermediate across pharmaceutical, agrochemical, and polymer industries.

How Is It Used in Research and Industry?

It’s applied in synthesis of advanced building blocks, reactivity screening, and regioselective catalysis. Its Z-isomer geometry makes it ideal for evaluating steric hindrance and olefin reactivity under varied catalytic conditions. Used by:

• Fine-chemical manufacturers scaling R&D intermediates
• CRO/CDMO operations performing geometric isomer separation
• Catalyst developers testing E/Z discrimination
• Polymer chemists studying unsaturated monomer behavior

What Are the Technical Specifications of cis‑4‑Methyl‑2‑pentene?

Why Do B2B Buyers Choose Pharmint for This Compound?

• Regulatory-grade documentation: COA, MSDS, REACH support
• Flexible batch sizes for pilot or commercial R&D
• Rapid fulfillment across EU, LATAM, and Asia
• Global shipping compliance (UN 2288, GHS classified)
• Customs-ready: Export labeling, HS codes, end-use support
• Supplier transparency: Batch tracking, third-party QC reports on request

How Should cis‑4‑Methyl‑2‑pentene Be Stored?

Store sealed in inert atmosphere at 0–10 °C, away from ignition sources. Light- and air-sensitive. Recommended storage in amber containers with PTFE-lined caps. Shelf-stable for 12 months when handled under controlled temperature and atmosphere.

What Are the Regulatory and Shipping Details?

• UN Classification: UN 2288 – Flammable Liquid, NOS
• GHS Labeling:
  • H225: Highly flammable
  • H304: May cause fatal aspiration
• Compliant for Air & Maritime Transport
• End-Use Restrictions: Not for pharmaceutical or food/veterinary use
• SDS Availability: Provided with purchase, multilingual formats on request

How Is It Related to Other Alkenes or Isomers?

This compound is the Z-isomer of 4‑Methyl‑2‑pentene; the corresponding E-isomer (trans‑4‑Methyl‑2‑pentene) has different physical and chemical properties. It shares structural traits with:

• Hexene isomers
• 3-methyl-1-butene
• Isomerism studies in catalysis and reaction mechanism trials
• Used in Ni, Pd, or Rh catalyzed hydrogenation and hydroboration research

cis‑4‑Methyl‑2‑pentene FAQs

What is the minimum order quantity for cis‑4‑Methyl‑2‑pentene in bulk supply?

The minimum order quantity for cis‑4‑Methyl‑2‑pentene depends on purity grade and packaging but typically starts at 100 mL or 500 g for R&D use, with bulk supply options negotiated for industrial buyers or repeat contracts.

Can cis‑4‑Methyl‑2‑pentene be exported under dual-use control regulations?

cis‑4‑Methyl‑2‑pentene is not listed as a dual-use controlled substance under EU or U.S. export control lists but still requires end-use declarations due to its flammability and lab-only use classification.

Does cis‑4‑Methyl‑2‑pentene require cold chain logistics during shipping?

Cold chain is not mandatory but is recommended to preserve isomeric stability; compound should be shipped under ambient or cool storage conditions in sealed, light-protected containers with hazard labels.

Is cis‑4‑Methyl‑2‑pentene compatible with aqueous reaction conditions?

As a hydrophobic hydrocarbon, cis‑4‑Methyl‑2‑pentene is insoluble in water and not suitable for aqueous-phase chemistry; reactions should use organic solvents such as hexane, ether, or THF under inert atmosphere.

How do I validate the stereoisomeric purity of cis‑4‑Methyl‑2‑pentene?

The stereoisomeric purity can be verified using GC-MS or ¹H NMR analysis comparing the Z-isomer retention or chemical shifts; Pharmint offers optional COA supplements detailing Z:E ratio upon request.