13-Ethyl-18,19-dinorpregn-5-en-20-yne-3ß,17ß-diol CAS 19913-33-8

Purity 97%+In StockPharmaceutical Standards
CAS No.19913-33-8
Molecular FormulaC20H28O2
Molecular Weight300.44 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

13-Ethyl-18,19-dinorpregn-5-en-20-yne-3ß,17ß-diol CAS 19913-33-8 chemical structure

Description

The occurrence of 13-Ethyl-18,19-dinorpregn-5-en-20-yne-3ß,17ß-diol is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

13-Ethyl-18,19-dinorpregn-5-en-20-yne-3ß,17ß-diol (CAS 19913-33-8) is a high-purity analytical reference standard with the molecular formula C20H28O2 and a molecular weight of 300.44 g/mol.

The molecular framework of 13-Ethyl-18,19-dinorpregn-5-en-20-yne-3ß,17ß-diol (C20H28O2) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

CATO manufactures 13-Ethyl-18,19-dinorpregn-5-en-20-yne-3ß,17ß-diol under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC20H28O2
Molecular Weight300.44 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962

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