Florfenicol Impurity 9 CAS 2991239-50-8

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.2991239-50-8
Molecular FormulaC10H11FO4S
Molecular Weight246.26 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Florfenicol Impurity 9 CAS 2991239-50-8 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 246.26 g/mol gives Florfenicol Impurity 9 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Florfenicol Impurity 9 (CAS 2991239-50-8) is a certified pharmaceutical impurity reference standard with the molecular formula C10H11FO4S and a molecular weight of 246.26 g/mol.

Structurally, Florfenicol Impurity 9 (C10H11FO4S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 246.26 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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.

As a certified reference material (CRM), Florfenicol Impurity 9 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.

Physical & Chemical Properties

Molecular FormulaC10H11FO4S
Molecular Weight246.26 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2004
Halogen ContentF-containing
Sulfur Atoms1

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