Beraprost Impurity 11 CAS 88277-19-4
| CAS No. | 88277-19-4 |
| Molecular Formula | C17H22O5 |
| Molecular Weight | 306.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Beraprost Impurity 11 (C17H22O5) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 306.35 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies Beraprost Impurity 11 (CAS 88277-19-4), a pharmacopoeial impurity reference standard (molecular formula C17H22O5, MW 306.35 g/mol) used for the identification and quantification of trace impurities in APIs.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
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 | C17H22O5 |
| Molecular Weight | 306.35 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
Related Beraprost Standards
- Beraprost Impurity 19 (CAS CATO-C4X-218419)
- Beraprost Impurity 22 (CAS 88277-22-9)
- Beraprost Impurity 18 (CAS CATO-C4X-218418)
- Beraprost Impurity 10 (CAS 70073-58-4)
- Beraprost Impurity 20 (CAS CATO-C4X-218420)
- Beraprost Impurity 4(discontinue,see C4X-218413) (CAS CATO-C4X-21844)
- Beraprost Impurity 32 (CAS CATO-C4X-218432)
- Beraprost Impurity 5 (Mixture of Diastereomers) (CAS CATO-C4X-21845)
Recommended Standards
- Loxoprofen Impurity 78 (CAS CATO-C4X-148878)
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- tert-Butyl 3-{[(benzyloxy)carbonyl]amino}azetidine-1-carboxylate (CAS 1017044-94-8)
- Cefaclor Impurity 48 (CAS CATO-C4X-127048)
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- Clopidogrel Impurity 104 (CAS CATO-C4X-1029104)
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- 2-Fluoro-6-(methoxycarbonyl)isonicotinic acid (CAS 1393553-46-2)
- Methyl (2R)-6-{[(tert-butoxy)carbonyl]amino}-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}hexanoate (CAS 172846-57-0)
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- 1,4-Bis(neopentyloxy)naphthalene (CAS 957761-01-2)
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- D-[Phe]6-Semaglutide (CAS CATO-CPTD788633)
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