Description

Fosfestrolsodium CAS NO 5965-09-3 is a synthetic, non-steroidal estrogen derivative used primarily in pharmaceutical applications. This compound is valued for its specific biological activity and is a critical active pharmaceutical ingredient (API) in certain therapeutic formulations. It is essential for manufacturers in the pharmaceutical industry engaged in the production of specialized hormonal therapies.

Application

• Pharmaceutical API: Primary use as an active ingredient in the formulation of specific estrogen-based medications.
• Hormone Therapy: Used in therapeutic regimens for conditions such as prostate cancer, where estrogenic action is required.
• Biochemical Research: Serves as a reference standard or reagent in endocrinology and oncology research laboratories.
• Veterinary Medicine: Potential application in veterinary pharmaceuticals for hormonal regulation in animals.
• Intermediate Synthesis: Can act as a key synthetic intermediate for developing more complex steroidal or hormonal compounds.

Basic Information

Product Name	Fosfestrolsodium
CAS No.	5965-09-3
Molecular Formula	C18H20Na2O8P2
Molecular Weight	496.26 g/mol
Synonyms	Fosfestrol Sodium; Diethylstilbestrol Diphosphate Sodium; Honvan; Stilphostrol; DES Diphosphate Sodium; NSC-10481; Fosfestrol Disodium; 4,4'-(1,2-Diethyl-1,2-ethenediyl)bisphenol, bis(dihydrogen phosphate), tetrasodium salt
EINECS	227-785-3

Quality Control

Our Fosfestrolsodium is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including identification, purity assay, and impurity profiling via HPLC, to ensure it meets high-grade pharmaceutical standards. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect stability and potency.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	98.0% - 102.0% (on anhydrous basis)
Water Content (KF)	≤ 5.0%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 1.0%
Residual Solvents (GC)	Complies with ICH Q3C guidelines
Heavy Metals	≤ 20 ppm

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