Phthalic-13C Acid CAS 70838-83-4

Purity 97%+In StockPharmaceutical Standards
CAS No.70838-83-4
Molecular FormulaC6[13C]2H6O4
Molecular Weight168.12 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Phthalic-13C Acid CAS 70838-83-4 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 168.12 g/mol gives Phthalic-13C Acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Phthalic-13C Acid (CAS 70838-83-4) is a high-purity analytical reference standard with the molecular formula C6[13C]2H6O4 and a molecular weight of 168.12 g/mol.

Phthalic-13C Acid (C6[13C]2H6O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).

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), Phthalic-13C Acid 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 FormulaC6[13C]2H6O4
Molecular Weight168.12 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1977

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