Description

17Alpha-Ethynyl-19-Nortestosterone 17-Heptanoate is a synthetic steroid ester, a long-chain derivative of the potent anabolic-androgenic steroid nandrolone. This compound is primarily valued in pharmaceutical research and development for its modified pharmacokinetic profile, offering a controlled release mechanism due to the heptanoate ester moiety. It is of significant interest to researchers and manufacturers in the steroid API sector, particularly for exploring sustained-release formulations and studying structure-activity relationships.

Application

• Pharmaceutical Intermediate: Serves as a key synthetic intermediate in the research and development of novel anabolic-androgenic steroid (AAS) based therapeutics.
• Reference Standard: Used as a high-purity analytical standard in quality control laboratories for method development and validation of steroid assays.
• Biochemical Research: Employed in preclinical studies to investigate the effects of esterification on steroid hormone receptor binding affinity, metabolic stability, and duration of action.
• Controlled-Release Formulation Development: A model compound for studying the design and efficacy of long-acting injectable depot formulations in endocrinology.

Basic Information

Product Name	17Alpha-Ethynyl-19-Nortestosterone 17-Heptanoate
CAS No.	3836-23-5
Molecular Formula	C28H40O3
Molecular Weight	424.62 g/mol
Synonyms	Norethisterone Heptanoate; 17α-Ethynyl-19-nortestosterone 17-heptanoate; 19-Nor-17α-pregn-4-en-20-yn-3-one, 17-heptanoate; Ethynylestrenolone Heptanoate; Norigest Heptanoate; NSC-95686; Norethindrone Heptanoate
EINECS	223-335-8

Quality Control

Our 17Alpha-Ethynyl-19-Nortestosterone 17-Heptanoate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, identity confirmation by IR and NMR spectroscopy, and residual solvent analysis. We provide full traceability and Certificates of Analysis (COA) are available for all shipments, ensuring compliance with research-grade specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be handled in a dry environment to prevent degradation.

Specification

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