Description

Almestrone CAS NO 10448-96-1 is a synthetic steroid compound of significant interest in pharmaceutical research and development. This compound serves as a crucial intermediate or active pharmaceutical ingredient (API) in the synthesis of various therapeutic agents. It is primarily utilized by research institutions, pharmaceutical manufacturers, and fine chemical suppliers engaged in the development of steroid-based medications and novel drug candidates.

Application

• Pharmaceutical Intermediate: A key building block in the multi-step synthesis of complex steroid-based active pharmaceutical ingredients (APIs).
• Research & Development: Used in biochemical and pharmacological research to study steroid hormone pathways, receptor interactions, and metabolic processes.
• Reference Standard: Serves as a high-purity analytical standard for quality control and method development in pharmaceutical laboratories.
• Preclinical Studies: Employed in the development and testing of new therapeutic compounds targeting endocrine and metabolic disorders.
• Fine Chemical Synthesis: Utilized in custom synthesis and contract manufacturing for producing specialized steroid derivatives.

Basic Information

Product Name	Almestrone
CAS No.	10448-96-1
Molecular Formula	C21H28O3
Molecular Weight	328.45 g/mol
Synonyms	Almestrone; 3-Hydroxy-19-nor-17α-pregna-1,3,5(10)-trien-20-yn-17-ol; 19-Nor-17α-pregna-1,3,5(10)-trien-20-yne-3,17-diol; 17α-Ethynyl-19-norestradiol; 17α-Ethynylestra-1,3,5(10)-triene-3,17β-diol; Ethynylestradiol Impurity; Estrogen Derivative
EINECS	Contact for details

Quality Control

Our Almestrone is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including identification by spectroscopic methods (IR, NMR), purity assessment by HPLC, and control of specific impurities. We provide Certificates of Analysis (COA) with each shipment, detailing all test results against established specifications. Our quality commitment ensures material suitable for research and pharmaceutical development applications.

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 the container tightly sealed to protect from moisture.

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% 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.