Description

(3R,5R)-3,5-Cyclo-5α-Cholestan-6-One Ethylene Acetal is a high-purity, specialized steroidal intermediate featuring a protected ketone functional group. This compound is valued for its role as a critical building block in the synthesis of complex pharmaceutical and fine chemical targets. It is primarily sought after by research institutions and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors for developing novel active ingredients and chiral molecules.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the research and development of steroidal drugs and hormone analogs.
• Fine Chemical Synthesis: Used in multi-step organic synthesis to construct complex molecular architectures, leveraging its protected carbonyl functionality.
• Agrochemical Research: Serves as a precursor in the development of novel plant growth regulators or bioactive compounds.
• Academic & R&D: Employed in university and industrial laboratories for methodological studies in stereoselective synthesis and natural product chemistry.
• Material Science Precursor: Potential use in the synthesis of specialized liquid crystals or organic semiconductors due to its rigid, fused-ring structure.

Basic Information

Product Name	(3R,5R)-3,5-Cyclo-5α-Cholestan-6-One Ethylene Acetal
CAS No.	35868-79-2
Molecular Formula	C₃₁H₅₂O₂
Molecular Weight	456.75 g/mol
Synonyms	5α-Cholestan-6-one, 3,5-cyclo-, ethylene acetal, (3R,5R)-; (3R,5R)-3,5-Cyclo-5α-cholestan-6-one ethylene ketal; 5α-Cholestan-6-one ethylene ketal (3,5-cyclo derivative); Ethylene acetal of (3R,5R)-3,5-cyclo-5α-cholestan-6-one; Steroid intermediate K-6; Cholestane ethylene acetal derivative.
EINECS	Contact for details

Quality Control

Our (3R,5R)-3,5-Cyclo-5α-Cholestan-6-One Ethylene Acetal is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC, GC, and NMR, to ensure identity, purity, and chiral integrity. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee traceability and compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity	≥ 99.0% de
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Single Unknown Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 2.0%

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