Description

Promethoestrol is a synthetic estrogenic steroid compound with significant research and industrial utility. Its well-defined chemical structure makes it a valuable intermediate and reference standard in the development and analysis of steroidal pharmaceuticals. This compound is primarily sought by manufacturers and research institutions in the pharmaceutical, biotechnology, and fine chemical sectors for applications requiring high-purity steroid intermediates.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of more complex steroidal drugs and hormone therapies.
• Reference Standard: Used in analytical laboratories for method development, calibration, and quality control testing of estrogenic compounds.
• Biochemical Research: Employed in studies investigating estrogen receptor binding, hormonal pathways, and endocrine system function.
• Fine Chemical Synthesis: Serves as a precursor for the manufacture of specialized steroids and related organic molecules.

Basic Information

Product Name	Promethoestrol
CAS No.	130-73-4
Molecular Formula	C₂₁H₂₆O₂
Molecular Weight	310.43 g/mol
Synonyms	Promethoestrol; Promethestrol; 3,4-Bis(4-hydroxyphenyl)-2,4-hexadiene; meso-3,4-Bis(4-hydroxyphenyl)hex-3-ene; meso-α,α'-Diethyl-4,4'-stilbenediol; NSC 73736; meso-Dihydrodiethylstilbestrol
EINECS	204-978-6

Quality Control

Our Promethoestrol is produced under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including identification, assay, and impurity profiling via techniques such as HPLC, IR, and NMR. A Certificate of Analysis (COA) detailing all specifications and test results is provided with every shipment to guarantee compliance with your research or manufacturing requirements.

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 minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥98.0%
Melting Point	168°C - 172°C
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.