Lubiprostone impurity 7 CAS CATO-C4X-11367
| CAS No. | CATO-C4X-11367 |
| Molecular Formula | C20H32F2O5 |
| Molecular Weight | 390.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Lubiprostone impurity 7 (CAS CATO-C4X-11367), a pharmacopoeial impurity reference standard (molecular formula C20H32F2O5, MW 390.46 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Lubiprostone impurity 7 (C20H32F2O5) contains a steroid core, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 390.46 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C20H32F2O5 |
| Molecular Weight | 390.46 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
Related Lubiprostone Standards
- Lubiprostone (CAS 136790-76-6/333963-40-9)
- Lubiprostone Impurity 18 (CAS 201226-21-3)
- Lubiprostone Impurity 3 (CAS 1263283-38-0)
- Lubiprostone Impurity 30 (CAS 2743427-14-5)
- Lubiprostone Impurity 31 (CAS CATO-C4X-113631)
- Lubiprostone Impurity 32 (CAS CATO-C4X-113632)
- Lubiprostone Impurity 33 (CAS CATO-C4X-113633)
- Lubiprostone Impurity 35 (CAS 1808535-45-6 (Cyclo Form))
Recommended Standards
- Lubiprostone Impurity 43 (CAS CATO-C4X-113643)
- Tafluprost Impurity 18 (CAS CATO-C4X-216318)
- Lubiprostone Impurity 41 (CAS CATO-C4X-113641)
- (Ethanediylidenetetrathio)tetraacetic acid (CAS 10003-69-7)
- Olopatadine Impurity 66 (CAS CATO-C4X-171866)
- Valaciclovir Impurity 44 (CAS CATO-C4X-124844)
- Nizatidine impurity 17 (CAS CATO-C4X-138017)
- tert-Butyl 3-acetoxy-4-oxopiperidine-1-carboxylate (CAS 1881288-56-7)
- 4-(2-Methoxy-phenyl)-5-thiophen-2-yl-4H-[1,2,4]triazole-3-thiol (CAS 380574-16-3)
- 2-Amino-8-hydroxy-[1,2,4]triazolo[1,5-a]pyridine (CAS 1257706-88-9)
- 4-Amino-3-(difluoromethyl)-6-(trifluoromethyl)pyridin-2-ol (CAS 1806816-11-4)
- Ethyl 4-((4-(tert-butyl)phenyl)sulfonyl)-6-chloro-3,4-dihydro-2H-benzo[b][1,4]oxazine-2-carboxylate (CAS 866134-64-7)
- 8-Bromo-4-methoxy-2-(trifluoromethyl)quinoline (CAS 587886-08-6)
- Semaglutide Impurity 133 (CAS CATO-C4X-2226133)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com