Anastrozole Impurity 29 CAS CATO-C4X-123929
| CAS No. | CATO-C4X-123929 |
| Molecular Formula | C9H11BrO |
| Molecular Weight | 215.09 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Anastrozole Impurity 29 is closely related to a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Anastrozole Impurity 29 (CAS CATO-C4X-123929), a pharmacopoeial impurity reference standard (molecular formula C9H11BrO, MW 215.09 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Anastrozole Impurity 29 (C9H11BrO) is characterized by a hydroxyl group, an ether linkage, bromine substitution, 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 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).
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 Anastrozole Impurity 29 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 | C9H11BrO |
| Molecular Weight | 215.09 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| 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 |
| Halogen Content | Br-containing |
Related Anastrozole Standards
- Anastrozole Impurity 26 (CAS 120512-38-1)
- Anastrozole Impurity 35 (CAS 2384659-42-9)
- Anastrozole EP Impurity H (CAS 120511-72-0)
- Anastrozole Impurity 3 (CAS 120512-37-0)
- Anastrozole Impurity 25 (CAS CATO-C4X-123925)
- Anastrozole Impurity 18 (CAS 120511-89-9)
- Anastrozole EP Impurity E (CAS 120511-88-8)
- Anastrozole Impurity 24 (CAS CATO-C4X-123924)
Recommended Standards
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- Aztreonam impurity 73 (CAS CATO-C4X-152273)
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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