Description

Cyclopentanecarboxaldehyde, 2-Methyl-5-(1-Methylethenyl)-, (1R,2R,5S)- is a high-purity, chiral monoterpenoid aldehyde characterized by its specific stereochemistry. This compound is valued for its role as a versatile chiral building block and a key intermediate in the synthesis of complex organic molecules, particularly in the fragrance and pharmaceutical sectors. It is essential for manufacturers and R&D chemists seeking to introduce specific stereocenters and functional groups into target compounds, enabling the production of high-value, optically active products.

Application

• Fragrance and Flavor Intermediate: Serves as a crucial precursor in the synthesis of complex, high-value aroma chemicals and flavoring agents, leveraging its unique terpenoid backbone.
• Pharmaceutical Synthesis: Acts as a key chiral building block for the development of active pharmaceutical ingredients (APIs), especially in the synthesis of terpene-based drugs and other bioactive molecules.
• Agrochemical Research: Used in the research and development of novel pesticides and herbicides, where its specific stereochemistry can influence biological activity.
• Fine Chemical Manufacturing: Employed as an intermediate in the production of specialty chemicals, catalysts, and advanced materials requiring precise molecular architecture.
• Academic and Industrial R&D: A valuable reagent for methodological studies in asymmetric synthesis, total synthesis of natural products, and exploration of new chemical transformations.

Basic Information

Product Name	Cyclopentanecarboxaldehyde, 2-Methyl-5-(1-Methylethenyl)-, (1R,2R,5S)-
CAS No.	55253-28-6
Molecular Formula	C10H16O
Molecular Weight	152.23 g/mol
Synonyms	(1R,2R,5S)-2-Methyl-5-(prop-1-en-2-yl)cyclopentanecarbaldehyde; (-)-Myrtenal; (1R,2R,5S)-(-)-Myrtenal; L-Myrtenal; (1R)-(-)-Myrtenal; (1R,5S)-(-)-Myrtenal; 2-Methyl-5-(1-methylethenyl)cyclopentanecarboxaldehyde, (1R,2R,5S)-; (1R,2R,5S)-2-Methyl-5-isopropenylcyclopentanecarboxaldehyde
EINECS	Contact for details

Quality Control

Our Cyclopentanecarboxaldehyde, 2-Methyl-5-(1-Methylethenyl)-, (1R,2R,5S)- is produced under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chiral purity analysis, to confirm identity, strength, and quality. Certificates of Analysis (COA) detailing specific results for each parameter are provided and available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This material is easily oxidized and should be stored under an inert atmosphere (e.g., nitrogen) for long-term stability. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Chiral Purity (Chiral GC/HPLC)	≥ 99.0% ee (1R,2R,5S)-isomer
Refractive Index (n20D)	1.485 - 1.495
Specific Rotation ([α]20D)	-50° to -60° (c=1 in CHCl3)

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