(4R,4'R,5S,5'S)-2,2'-(1,3-Dihydro-2H-inden-2-ylidene)bis[4,5-dihydro-4,5-diphenyloxazole] CAS 1656253-81-4
| CAS No. | 1656253-81-4 |
| Molecular Formula | C39H32N2O2 |
| Molecular Weight | 560.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(4R,4'R,5S,5'S)-2,2'-(1,3-Dihydro-2H-inden-2-ylidene)bis[4,5-dihydro-4,5-diphenyloxazole] (CAS 1656253-81-4), molecular formula C39H32N2O2 and molecular weight 560.68 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C39H32N2O2, (4R,4'R,5S,5'S)-2,2'-(1,3-Dihydro-2H-inden-2-ylidene)bis[4,5-dihydro-4,5-diphenyloxazole] contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 560.68 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 Formula | C39H32N2O2 |
| Molecular Weight | 560.68 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 25.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 2 |
Recommended Standards
- Tetraethyl 1,1′-hexamethylenebis(2,5-dimethyl-1H-pyrrole-3,4-dicarboxylate) (CAS 131970-79-1)
- (4R)-3-[(2S,3S)-2-Acetyl-3-[3-[bis(phenylmethyl)amino]phenyl]-1-oxopentyl]-4-phenyl-2-oxazolidinone (CAS 188559-10-6)
- (R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-5-((1-(4,4-dimethyl-2,6-dioxocyclohexylidene)-3-methylbutyl)amino)pentanoic acid (CAS 1272754-86-5)
- (4R,4'R,5R,5'R)-2,2'-(2,3-Dhydro-1H-indene-2,2-diyl)bis(4,5-diphenyl-4,5-dihydrooxazole) (CAS 2757085-87-1)
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