Description

Cyclohepta[B]Pyran-5,8-Imin-4(4Ah)-One, 3-Ethyl-5,6,7,8,9,9A-Hexahydro-10-Methyl-, (4As,5R,8S,9As)- (9Ci) is a complex, stereochemically defined heterocyclic compound that serves as a critical advanced pharmaceutical intermediate or research chemical. Its intricate fused-ring structure makes it a valuable building block for the synthesis of novel active pharmaceutical ingredients (APIs) and other fine chemicals. This high-purity compound is primarily sought by pharmaceutical R&D teams, contract research organizations (CROs), and specialty chemical manufacturers engaged in cutting-edge organic synthesis.

Application

• Pharmaceutical Intermediate: A key chiral precursor in the multi-step synthesis of complex drug candidates, particularly in central nervous system (CNS) or antiviral research.
• Medicinal Chemistry Research: Used as a scaffold or building block for constructing novel chemical libraries for high-throughput screening and structure-activity relationship (SAR) studies.
• Process Chemistry Development: Serves as a critical intermediate for scaling up synthetic routes from laboratory to pilot plant and commercial production.
• Academic & Institutional Research: Employed in universities and research institutes for studies in synthetic methodology, asymmetric synthesis, and heterocyclic chemistry.
• Fine Chemical Synthesis: Utilized in the production of specialty chemicals, agrochemical intermediates, or materials science precursors requiring specific stereochemistry.

Basic Information

Product Name	Cyclohepta[B]Pyran-5,8-Imin-4(4Ah)-One, 3-Ethyl-5,6,7,8,9,9A-Hexahydro-10-Methyl-, (4As,5R,8S,9As)- (9Ci)
CAS No.	616880-21-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	(4aS,5R,8S,9aR)-3-Ethyl-10-methyl-5,6,7,8,9,9a-hexahydro-4aH-cyclohepta[b]pyrano[5,8-e]imin-4(1H)-one; 3-Ethyl-5,6,7,8,9,9a-hexahydro-10-methyl-cyclohepta[b]pyrano[5,8-e]imin-4(4aH)-one, (4aS,5R,8S,9aR)-; Cyclohepta[b]pyrano[5,8-e]imin-4(4aH)-one, 3-ethyl-5,6,7,8,9,9a-hexahydro-10-methyl-, (4aS,5R,8S,9aR)-; 616880-21-8; (4aS,5R,8S,9aR)-3-Ethyl-10-methyl-4a,5,6,7,8,9,9a,10-octahydro-1H-cyclohepta[b]pyrano[5,8-e]imin-4-one
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management systems. Every batch is characterized and tested using advanced analytical techniques including HPLC, GC, NMR, and mass spectrometry to ensure identity, purity, and stereochemical integrity. A comprehensive Certificate of Analysis (COA) detailing all specifications and test results is provided with each shipment. We support development and commercial projects requiring compliance with cGMP and ICH Q7 guidelines.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (typically 15-25°C). For long-term storage, consider storage under an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm
Specific Rotation	Contact for details

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