Description

cis-4-Methyl-2-Pentene is a high-purity, branched-chain alkene isomer with the CAS number 691-38-3. This compound serves as a valuable intermediate and building block in advanced organic synthesis, prized for its defined stereochemistry and reactivity. It is essential for research and development chemists and process engineers in the pharmaceutical, agrochemical, and specialty chemical industries who require precise and reliable raw materials for complex syntheses.

Application

• As a key chiral intermediate in the synthesis of active pharmaceutical ingredients (APIs) and fine chemicals.
• Used in organic synthesis research for studying olefin metathesis and other catalytic reactions.
• Employed as a monomer or co-monomer in the development of specialized polymers and elastomers.
• Serves as a starting material or reagent in the production of flavor and fragrance compounds.
• Utilized in agrochemical synthesis for creating novel crop protection agents.
• Acts as a standard or reference material in analytical chemistry and gas chromatography.

Basic Information

Product Name	cis-4-Methyl-2-Pentene
CAS No.	691-38-3
Molecular Formula	C6H12
Molecular Weight	84.16 g/mol
Synonyms	(Z)-4-Methyl-2-pentene; (Z)-4-Methylpent-2-ene; 2-Pentene, 4-methyl-, (Z)-; 4-Methyl-cis-2-pentene; 4-Methyl-(Z)-2-pentene; (2Z)-4-Methyl-2-pentene; 2-Pentene, 4-methyl-, cis-
EINECS	211-714-5

Quality Control

Our cis-4-Methyl-2-Pentene is manufactured under stringent quality management systems. Every batch undergoes comprehensive analytical testing, including GC and GC-MS analysis, to ensure high chemical purity and isomeric integrity. A detailed Certificate of Analysis (COA) confirming identity, purity, and relevant specifications is provided with each shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat, sparks, and open flame. Due to its highly volatile nature, keep container tightly sealed when not in use. Recommended storage temperature is 2-8°C (refrigerated) for long-term stability. Keep away from strong acids and oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms
Purity (GC)	≥ 98.0%
Isomeric Purity (cis-isomer, GC)	≥ 95.0%
Water Content (KF)	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.