Norethisterone EP Impurity C CAS 22933-71-7

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.22933-71-7
Molecular FormulaC20H26O2
Molecular Weight298.42 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Norethisterone EP Impurity C CAS 22933-71-7 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 298.42 g/mol gives Norethisterone EP Impurity C distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Norethisterone EP Impurity C (CAS 22933-71-7) is a certified pharmaceutical impurity reference standard with the molecular formula C20H26O2 and a molecular weight of 298.42 g/mol.

Structurally, Norethisterone EP Impurity C (C20H26O2) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 298.42 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.

CATO manufactures Norethisterone EP Impurity C 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 FormulaC20H26O2
Molecular Weight298.42 g/mol
AppearancePale yellow to 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)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1963

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