Levonorgestrel EP Impurity L CAS 21800-83-9

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.21800-83-9
Molecular FormulaC19H26O2
Molecular Weight286.41 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Levonorgestrel EP Impurity L CAS 21800-83-9 chemical structure

Description

As a certified reference material (CRM), Levonorgestrel EP Impurity L meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Levonorgestrel EP Impurity L (CAS 21800-83-9) is a certified pharmaceutical impurity reference standard with the molecular formula C19H26O2 and a molecular weight of 286.41 g/mol.

Owing to a steroid core, a hydroxyl group, an ether linkage, Levonorgestrel EP Impurity L is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 286.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

Physical & Chemical Properties

Molecular FormulaC19H26O2
Molecular Weight286.41 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity>95%
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.)1963

Related Levonorgestrel Standards

Recommended Standards

Why CATO?