(2S, 4’’R, 8’’R)-α-Tocopherol CAS 18920-63-3

Purity 97%+In StockPharmaceutical Standards
CAS No.18920-63-3
Molecular FormulaC29H50O2
Molecular Weight430.71 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(2S, 4’’R, 8’’R)-α-Tocopherol CAS 18920-63-3 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 430.71 g/mol gives (2S, 4’’R, 8’’R)-α-Tocopherol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(2S, 4’’R, 8’’R)-α-Tocopherol (CAS 18920-63-3), molecular formula C29H50O2 and molecular weight 430.71 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of (2S, 4’’R, 8’’R)-α-Tocopherol (C29H50O2) is characterized by a steroid core, a hydroxyl group, an ether linkage. 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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), (2S, 4’’R, 8’’R)-α-Tocopherol 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 FormulaC29H50O2
Molecular Weight430.71 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)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962

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Why CATO?