1-Ethyl-3-isopropylbenzene CAS 4920-99-4

Purity 97%+In StockPharmaceutical Standards
CAS No.4920-99-4
Molecular FormulaC11H16
Molecular Weight148.24 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-Ethyl-3-isopropylbenzene CAS 4920-99-4 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-Ethyl-3-isopropylbenzene.

1-Ethyl-3-isopropylbenzene (CAS 4920-99-4), molecular formula C11H16 and molecular weight 148.24 g/mol, is a CATO reference standard with documented purity and traceability.

1-Ethyl-3-isopropylbenzene (C11H16) contains an aromatic ring system. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 FormulaC11H16
Molecular Weight148.24 g/mol
Purity97%+
StorageStore at 2-8°C
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1958

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Why CATO?