rel-(1S,2R,3S,4R)-3-methoxycarbonyl-7-oxabicyclo[2.2.1]hept-5-ene-2-carboxylic acid CAS 146339-80-2
| CAS No. | 146339-80-2 |
| Molecular Formula | C9H10O5 |
| Molecular Weight | 198.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
rel-(1S,2R,3S,4R)-3-methoxycarbonyl-7-oxabicyclo[2.2.1]hept-5-ene-2-carboxylic acid (CAS 146339-80-2) is a high-purity analytical reference standard with the molecular formula C9H10O5 and a molecular weight of 198.17 g/mol.
The molecular framework of rel-(1S,2R,3S,4R)-3-methoxycarbonyl-7-oxabicyclo[2.2.1]hept-5-ene-2-carboxylic acid (C9H10O5) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, 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.
Physical & Chemical Properties
| Molecular Formula | C9H10O5 |
| Molecular Weight | 198.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
Recommended Standards
- 7,8-Difluoro-3,4-dihydrobenzo[b]oxepin-5(2H)-one (CAS 145348-29-4)
- 1-(2,4-Difluorophenyl)imidazolidin-2-one (CAS 1545294-47-0)
- 6,8-Difluoro-2,3,4,5-tetrahydro-1-benzoxepin-5-one (CAS 145348-28-3)
- 1-(3,5-Difluorophenyl)imidazolidin-2-one (CAS 1547051-49-9)
- 3-({[(2,4-dichlorophenyl)methyl]sulfanyl}methyl)-5-(methylsulfanyl)-4-phenyl-4H-1,2,4-triazole (CAS 344274-41-5)
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- N,N-dibutyl-6-chloropyridazin-3-amine (CAS 1019-91-6)
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- 2-methyl-5-phenyl-1,3-oxazole-4-carboxylic acid (CAS 91137-53-0)
- Staphylococcus Aureus Protein A (SpA)-Derived Peptide (H-2228.0005) (CAS 144979-26-0)
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