Description

Stigmastadienone (24-Ethyl-4,22E-Cholestadien-3-One / 4,22-Stigmastadien-3-One) is a high-purity steroidal ketone of significant interest in advanced chemical synthesis and research. This compound serves as a crucial pharmaceutical intermediate and a valuable reference standard for analytical and bioactivity studies. It is primarily sought by manufacturers and research institutions in the pharmaceutical, nutraceutical, and fine chemical sectors for developing novel therapeutic agents and conducting metabolic pathway research.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of complex steroid-based active pharmaceutical ingredients (APIs) and hormone analogs.
• Reference Standard: Used as a high-purity analytical standard in HPLC, GC-MS, and NMR for quality control and method validation in laboratories.
• Biochemical Research: Employed in studies of steroid metabolism, enzyme inhibition assays, and investigations into cholesterol biosynthesis pathways.
• Nutraceutical Development: Serves as a precursor or an analytical marker in the development of plant sterol (phytosterol) based dietary supplements.
• Fine Chemical Synthesis: Utilized as a specialized starting material for the custom synthesis of novel steroidal compounds for various industrial applications.

Basic Information

Product Name	Stigmastadienone
CAS No.	129308-41-4
Molecular Formula	C₂₉H₄₆O
Molecular Weight	410.68 g/mol
Synonyms	24-Ethyl-4,22E-cholestadien-3-one; 4,22-Stigmastadien-3-one; Stigmasta-4,22-dien-3-one; (22E)-Stigmasta-4,22-dien-3-one; 24-Ethylcholesta-4,22-dien-3-one; 3-Oxo-stigmasta-4,22-diene; δ⁴,²²-Stigmastadien-3-one
EINECS	Contact for details

Quality Control

Our Stigmastadienone is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and purity, IR and NMR for structural confirmation, and residual solvent analysis. A detailed Certificate of Analysis (COA) documenting all specifications is provided with every shipment to support your quality assurance and regulatory 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 (15-25°C). Keep away from heat, open flames, and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference standard
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residual Solvents (GC)	Meets ICH guidelines

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