Calcitonin Impurity 9 CAS 28567-37-5

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.28567-37-5
Molecular FormulaC38H30O
Molecular Weight502.66 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Calcitonin Impurity 9 CAS 28567-37-5 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 502.66 g/mol gives Calcitonin Impurity 9 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Calcitonin Impurity 9 (CAS 28567-37-5), a pharmacopoeial impurity reference standard (molecular formula C38H30O, MW 502.66 g/mol) used for the identification and quantification of trace impurities in APIs.

The molecular framework of Calcitonin Impurity 9 (C38H30O) is characterized by a hydroxyl group, an ether linkage, a polycyclic aromatic system. 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 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.

CATO manufactures Calcitonin Impurity 9 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 FormulaC38H30O
Molecular Weight502.66 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at room temperature, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)24.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1965

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