Description

Diethylstilbestrol Dipropionate is a synthetic, non-steroidal estrogen derivative, chemically known as 4,4'-(1,2-diethyl-1,2-ethenediyl)bisphenol dipropionate. This compound is valued for its potent estrogenic activity and serves as a critical reference standard and active pharmaceutical ingredient (API) intermediate in research and development. It is primarily utilized by pharmaceutical manufacturers, analytical laboratories, and research institutions involved in endocrinology, oncology, and veterinary medicine.

Application

• Pharmaceutical Reference Standard: Used for the calibration of analytical instruments and the validation of methods in quality control (QC) and quality assurance (QA) laboratories.
• Active Pharmaceutical Ingredient (API) Intermediate: Serves as a key synthetic precursor in the manufacture of specialized hormonal therapies.
• Biomedical Research: Employed in preclinical and in vitro studies to investigate estrogen receptor signaling pathways and hormonal mechanisms.
• Veterinary Medicine: Historically used in growth promotion and therapeutic applications in livestock, subject to strict regional regulatory controls.
• Analytical Chemistry: Acts as a critical component in the development and testing of assays for detecting estrogenic compounds.

Basic Information

Product Name	Diethylstilbestrol Dipropionate
CAS No.	130-80-3
Molecular Formula	C24H28O4
Molecular Weight	380.48 g/mol
Synonyms	DES Dipropionate; Diethylstilbestrol Dipalmitate (common misnomer); Stilbestrol Dipropionate; 4,4'-(1,2-Diethyl-1,2-ethenediyl)bisphenol dipropionate; (E)-4,4'-(1,2-Diethyl-1,2-ethenediyl)diphenol dipropionate; NSC-3070; Oestrogen
EINECS	204-990-5

Quality Control

Our Diethylstilbestrol Dipropionate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including identification, purity assay, and impurity profiling via HPLC and other chromatographic techniques, to ensure it meets high-purity standards suitable for research and pharmaceutical applications. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The product is light-sensitive and should be handled accordingly to maintain stability.

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%
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.