Description

Cholesta-3,5-Diene is a key steroidal intermediate with the CAS registry number 747-90-0. This compound is essential for the synthesis of various steroid hormones, vitamin D analogs, and other biologically active molecules. It is a critical raw material for pharmaceutical R&D and production, particularly in the development of therapeutic agents targeting metabolic and endocrine pathways.

Application

• Pharmaceutical Intermediate: A crucial building block for the synthesis of steroid-based active pharmaceutical ingredients (APIs).
• Vitamin D Analog Synthesis: Used in the research and production of vitamin D derivatives and related compounds.
• Hormone Research: Serves as a precursor in the development of novel steroid hormones for therapeutic applications.
• Biochemical Research: Employed in academic and industrial laboratories for studying sterol metabolism and biosynthesis pathways.
• Fine Chemical Synthesis: A valuable intermediate in the multi-step synthesis of complex organic molecules for various high-value applications.

Basic Information

Product Name	Cholesta-3,5-Diene
CAS No.	747-90-0
Molecular Formula	C₂₇H₄₄
Molecular Weight	368.64 g/mol
Synonyms	3,5-Cholestadiene; Cholesta-3,5-diene; 5,6-Didehydrocholesterol; 3,5-Cholestadiene (8CI); δ3,5-Cholestadiene; NSC 6175; 5-Dehydrocholesterol
EINECS	212-025-7

Quality Control

Our Cholesta-3,5-Diene is produced under strict quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive analytical documentation, including Certificates of Analysis (COA) with detailed HPLC or GC profiles. Our quality commitment aligns with cGMP principles for pharmaceutical intermediates, ensuring traceability and reliability for critical synthesis workflows.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Specification available upon request
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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