Description

13-Ethyl-17Alpha-Hydroxy-18,19-Dinorpregn-4-En-20-Yn-3-One Butyrate is a high-purity synthetic steroid intermediate of significant commercial and research importance. This compound is valued for its role as a key building block in the synthesis of advanced pharmaceutical actives, particularly in the field of endocrinology. It is primarily sought by manufacturers and R&D facilities in the pharmaceutical and fine chemical sectors for the development of novel therapeutic agents and reference standards.

Application

• Pharmaceutical Intermediate: A critical precursor in the multi-step synthesis of steroidal drugs, including certain classes of progestins and other hormonal agents.
• Active Pharmaceutical Ingredient (API) Development: Used in research and development for creating new chemical entities (NCEs) targeting hormone receptors.
• Reference Standard: Serves as a high-purity analytical standard for quality control and method validation in pharmaceutical laboratories.
• Biochemical Research: Employed in academic and industrial research to study steroid metabolism, receptor binding, and structure-activity relationships (SAR).
• Fine Chemical Synthesis: Utilized as a specialized building block for constructing complex molecular architectures in custom synthesis and process development.

Basic Information

Product Name	13-Ethyl-17Alpha-Hydroxy-18,19-Dinorpregn-4-En-20-Yn-3-One Butyrate
CAS No.	86679-33-6
Molecular Formula	C26H36O3
Molecular Weight	396.57 g/mol
Synonyms	13-Ethyl-17α-hydroxy-18,19-dinorpregn-4-en-20-yn-3-one butyrate; 17α-Hydroxy-13-ethyl-18,19-dinorpregn-4-en-20-yn-3-one butyrate; Gestodene 17-butyrate; Gestodene butyrate; 17-Butyrylgestodene; 86679-33-6; Gestodene 17α-butyrate; Gestodene-17-butyrate
EINECS	Contact for details

Quality Control

Our 13-Ethyl-17Alpha-Hydroxy-18,19-Dinorpregn-4-En-20-Yn-3-One Butyrate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods, to ensure it meets stringent specifications for pharmaceutical-grade intermediates. Certificates of Analysis (COA) are provided with each shipment, detailing all relevant quality parameters.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed in a low-humidity environment to prevent degradation. For long-term storage, consider using desiccants.

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.