21978-49-4 5,9,13,17,21,25,29,33-Pentatriacontaoctaen-2-one,6,10,14,18,22,26,30,34-octamethyl-, (5E,9E,13E,17E,21E,25E,29E)- CAS 21978-49-4

Purity 97%+In StockPharmaceutical Standards
CAS No.21978-49-4
Molecular FormulaC43H70O
Molecular Weight603.02 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

21978-49-4 5,9,13,17,21,25,29,33-Pentatriacontaoctaen-2-one,6,10,14,18,22,26,30,34-octamethyl-, (5E,9E,13E,17E,21E,25E,29E)- CAS 21978-49-4 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 21978-49-4 5,9,13,17,21,25,29,33-Pentatriacontaoctaen-2-one,6,10,14,18,22,26,30,34-octamethyl-, (5E,9E,13E,17E,21E,25E,29E)-.

CATO supplies 21978-49-4 5,9,13,17,21,25,29,33-Pentatriacontaoctaen-2-one,6,10,14,18,22,26,30,34-octamethyl-, (5E,9E,13E,17E,21E,25E,29E)- (CAS 21978-49-4), a certified reference material (molecular formula C43H70O, MW 603.02 g/mol) for analytical method development and quality control.

The molecular framework of 21978-49-4 5,9,13,17,21,25,29,33-Pentatriacontaoctaen-2-one,6,10,14,18,22,26,30,34-octamethyl-, (5E,9E,13E,17E,21E,25E,29E)- (C43H70O) is characterized by a hydroxyl group, an ether linkage, a polycyclic aromatic 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.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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 FormulaC43H70O
Molecular Weight603.02 g/mol
Purity97%+
StorageStore at room temperature, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1963

Recommended Standards

Why CATO?