1991-52-2 593E9T2MWH 2,5-Di-tert-butyl-4-hydroxyanisole 2,5-Di-tert-butyl-4-methoxyphenol CCRIS 5220 EINECS 217-873-0 UNII-593E9T2MWH CAS 1991-52-2

Purity 97%+In StockPharmaceutical Standards
CAS No.1991-52-2
Molecular FormulaC15H24O2
Molecular Weight236.35 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1991-52-2 593E9T2MWH 2,5-Di-tert-butyl-4-hydroxyanisole 2,5-Di-tert-butyl-4-methoxyphenol CCRIS 5220 EINECS 217-873-0 UNII-593E9T2MWH CAS 1991-52-2 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 236.35 g/mol gives 1991-52-2 593E9T2MWH 2,5-Di-tert-butyl-4-hydroxyanisole 2,5-Di-tert-butyl-4-methoxyphenol CCRIS 5220 EINECS 217-873-0 UNII-593E9T2MWH distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

1991-52-2 593E9T2MWH 2,5-Di-tert-butyl-4-hydroxyanisole 2,5-Di-tert-butyl-4-methoxyphenol CCRIS 5220 EINECS 217-873-0 UNII-593E9T2MWH (CAS 1991-52-2) is a high-purity analytical reference standard with the molecular formula C15H24O2 and a molecular weight of 236.35 g/mol.

The molecular framework of 1991-52-2 593E9T2MWH 2,5-Di-tert-butyl-4-hydroxyanisole 2,5-Di-tert-butyl-4-methoxyphenol CCRIS 5220 EINECS 217-873-0 UNII-593E9T2MWH (C15H24O2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring 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 high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC15H24O2
Molecular Weight236.35 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at room temperature
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957

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