3,4-Difluorophenylacetylene CAS 143874-13-9

Purity 97%+In StockPharmaceutical Standards
CAS No.143874-13-9
Molecular FormulaC8H10F2
Molecular Weight144.16 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3,4-Difluorophenylacetylene CAS 143874-13-9 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 144.16 g/mol gives 3,4-Difluorophenylacetylene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

3,4-Difluorophenylacetylene (CAS 143874-13-9) is a high-purity analytical reference standard with the molecular formula C8H10F2 and a molecular weight of 144.16 g/mol.

Structurally, 3,4-Difluorophenylacetylene (C8H10F2) contains fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 144.16 g/mol, it falls into the low-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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.

As a certified reference material (CRM), 3,4-Difluorophenylacetylene 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 FormulaC8H10F2
Molecular Weight144.16 g/mol
Purity97%+
StorageStore at 2-8°C, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1998
Halogen ContentF-containing

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