Artemisinin Impurity 11 CAS 81496-81-3
| CAS No. | 81496-81-3 |
| Molecular Formula | C15H24O5 |
| Molecular Weight | 284.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Artemisinin Impurity 11 is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Artemisinin Impurity 11 (CAS 81496-81-3), a pharmacopoeial impurity reference standard (molecular formula C15H24O5, MW 284.35 g/mol) used for the identification and quantification of trace impurities in APIs.
Artemisinin Impurity 11 (C15H24O5) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Artemisinin Impurity 11 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C15H24O5 |
| Molecular Weight | 284.35 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
Related Artemisinin Standards
- Artemisinin-d3 (CAS 176652-07-6)
- 9-epi-Artemisinin (CAS 113472-97-2)
- Artemisinin (CAS 63968-64-9)
- Artemisinin Impurity 2 (CAS 1453465-55-8)
- Artemisinin Impurity 4 (CAS 181528-64-3)
- Artemisinin Impurity 17 (CAS CATO-C4X-201217)
- Artemisinin Impurity 9 (CAS CATO-C4X-20129)
- Artemisinin Impurity 10 (CAS 2989438-72-2)
Recommended Standards
- Nebivolol Impurity 75 (CAS CATO-C4X-196875)
- Tropicamide (CAS 1508-75-4)
- Nebivolol Impurity 70 (CAS CATO-C4X-196870)
- Nefopam impurity 16 (CAS CATO-C4X-283716)
- Apremilast Impurity 35 (CAS CATO-C4X-100935)
- Cefaclor Impurity 14 (CAS CATO-C4X-127014)
- Riluzole Impurity 22 (CAS CATO-C4X-200922)
- (R)-1-(7-Nitrobenzo[c][1,2,5]oxadiazol-4-yl)pyrrolidine-2-carboxylic acid (CAS 159717-70-1)
- 2-Methyl-1-(1-methyl-1H-imidazol-2-yl)propan-2-amine (CAS 1393563-45-5)
- 3-Fluoro-4-(perfluoroethyl)aniline (CAS 1208078-90-3)
- Plerixafor impurity 39 (CAS CATO-C4X-113339)
- N-(4,5,6,7-Tetrahydrobenzo[d]thiazol-2-yl)-3-(trifluoromethyl)benzamide (CAS 330189-70-3)
- 2-[4-(4-Methylpiperazin-1-yl)-3-nitrobenzoyl]benzoic acid (CAS 1370587-30-6)
- Neuropeptide GE (CAS 134748-04-2)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com