5,11,17,23-Tetra-t-butyl-25,26,27,28-tetrahydroxycalix-4-arene stereoisomer CAS 157432-87-6

Purity 97%+In StockPharmaceutical Standards
CAS No.157432-87-6
Molecular FormulaC44H56O4
Molecular Weight648.91 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5,11,17,23-Tetra-t-butyl-25,26,27,28-tetrahydroxycalix-4-arene stereoisomer CAS 157432-87-6 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 648.91 g/mol gives 5,11,17,23-Tetra-t-butyl-25,26,27,28-tetrahydroxycalix-4-arene stereoisomer distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

5,11,17,23-Tetra-t-butyl-25,26,27,28-tetrahydroxycalix-4-arene stereoisomer (CAS 157432-87-6), molecular formula C44H56O4 and molecular weight 648.91 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, 5,11,17,23-Tetra-t-butyl-25,26,27,28-tetrahydroxycalix-4-arene stereoisomer is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 648.91 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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), 5,11,17,23-Tetra-t-butyl-25,26,27,28-tetrahydroxycalix-4-arene stereoisomer 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 FormulaC44H56O4
Molecular Weight648.91 g/mol
Purity97%+
StorageStore at room temperature, protect from light, keep sealed and dry
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)17.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2001

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