(11,16-Dihydro-5H-6,10-(metheno)fluoreno[4,5-bcd][1,6]dioxacyclotridecine-16,16-diyl)bis(diphenylphosphine) CAS 331768-74-2

Purity 97%+In StockPharmaceutical Standards
CAS No.331768-74-2
Molecular FormulaC45H34O2P2
Molecular Weight668.70 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(11,16-Dihydro-5H-6,10-(metheno)fluoreno[4,5-bcd][1,6]dioxacyclotridecine-16,16-diyl)bis(diphenylphosphine) CAS 331768-74-2 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 (11,16-Dihydro-5H-6,10-(metheno)fluoreno[4,5-bcd][1,6]dioxacyclotridecine-16,16-diyl)bis(diphenylphosphine).

(11,16-Dihydro-5H-6,10-(metheno)fluoreno[4,5-bcd][1,6]dioxacyclotridecine-16,16-diyl)bis(diphenylphosphine) (CAS 331768-74-2) is a high-purity analytical reference standard with the molecular formula C45H34O2P2 and a molecular weight of 668.70 g/mol.

Structurally, (11,16-Dihydro-5H-6,10-(metheno)fluoreno[4,5-bcd][1,6]dioxacyclotridecine-16,16-diyl)bis(diphenylphosphine) (C45H34O2P2) contains organophosphorus functionality, a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 29.0, corresponding to approximately 29 ring(s) or double-bond equivalent(s). With a molecular weight of 668.70 g/mol, it falls into the high-molecular-weight range. 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 FormulaC45H34O2P2
Molecular Weight668.70 g/mol
Purity97%+
StorageStore at room temperature, protect from light
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)29.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025

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