Description

13-Ethyl-10,17-Dihydroxy-18,19-Dinor-17α-Pregn-4-En-20-Yn-3-One is a high-purity synthetic steroid intermediate of significant importance in pharmaceutical research and development. This compound serves as a critical building block for the synthesis of more complex, biologically active steroid molecules. It is primarily utilized by research institutions and pharmaceutical manufacturers engaged in the development of novel therapeutic agents, particularly in the fields of endocrinology and oncology.

Application

• Pharmaceutical Intermediate: A key precursor in the multi-step synthesis of advanced steroid-based active pharmaceutical ingredients (APIs).
• Research & Development: Used in medicinal chemistry for structure-activity relationship (SAR) studies and the discovery of new drug candidates.
• Hormone Analog Synthesis: Serves as a starting material for creating modified steroid structures with targeted biological activity.
• Reference Standard: Employed as an analytical standard in quality control laboratories for method development and impurity profiling.
• Biochemical Research: Utilized in studies investigating steroid receptor interactions and metabolic pathways.

Basic Information

Product Name	13-Ethyl-10,17-Dihydroxy-18,19-Dinor-17α-Pregn-4-En-20-Yn-3-One
CAS No.	21508-50-9
Molecular Formula	C₂₂H₃₀O₃
Molecular Weight	342.47 g/mol
Synonyms	13-Ethyl-10,17-dihydroxy-18,19-dinor-17α-pregn-4-en-20-yn-3-one; 10,17-Dihydroxy-13-ethyl-18,19-dinor-17α-pregn-4-en-20-yn-3-one; 17α-Hydroxy-13-ethyl-18,19-dinorpregn-4-en-20-yn-3-one, 10-hydroxy-; 13-Ethylgon-4-ene-10,17-diol-3,20-dione (obsolete); Desogestrel Intermediate; 13-Ethyl Steroid Intermediate; 21508-50-9; 13-Ethyl-10,17α-dihydroxy-18,19-bisnor-17α-pregn-4-en-20-yn-3-one
EINECS	Contact for details

Quality Control

Our 13-Ethyl-10,17-Dihydroxy-18,19-Dinor-17α-Pregn-4-En-20-Yn-3-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for pharmaceutical R&D. Certificates of Analysis (COA) with detailed chromatographic data are available upon request to support your quality assurance and regulatory documentation.

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 incompatible materials and sources of ignition.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 1.0%
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.