Anastrozole EP Impurity C CAS 120511-84-4
| CAS No. | 120511-84-4 |
| Molecular Formula | C15H17BrN2 |
| Molecular Weight | 305.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Anastrozole EP Impurity C (CAS 120511-84-4), a pharmacopoeial impurity reference standard (molecular formula C15H17BrN2, MW 305.21 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C15H17BrN2, Anastrozole EP Impurity C contains a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 305.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 manufactures Anastrozole EP Impurity C 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 | C15H17BrN2 |
| Molecular Weight | 305.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Anastrozole Standards
- Anastrozole-d12 (CAS 120512-32-5)
- Anastrozole Impurity 30 (CAS CATO-C4X-123930)
- Anastrozole Impurity 39 (CAS CATO-C4X-123939)
- Anastrozole Impurity 8 (CAS CATO-C4X-12398)
- Anastrozole Impurity 9 (CAS 120512-03-0)
- Anastrozole Impurity 14 (CAS 1338800-82-0)
- Anastrozole (CAS 120511-73-1)
- Anastrozole EP Impurity G (CAS 120511-92-4)
Recommended Standards
- 1-boc-5-bromopyrrolo[2,3-b]pyridine 5-bromo-pyrrolo[2,3-b]pyridine-1-carboxylicacidtert-butylester 928653-80-9 tert-Butyl 5-bromo-1H-pyrrolo[2,3-b]pyridine-1-carboxylate (CAS 928653-80-9)
- 1-[2-(1-Piperidyl)ethyl]-1H-pyrazole-4-boronic Acid Pinacol Ester (CAS 1000802-51-6)
- N1-(3-bromobenzyl)-N4,N4-dimethylbenzene-1,4-diamine (CAS 710298-40-1)
- 5-(((5-Bromothiophen-3-yl)methyl)thio)-4-methyl-4h-1,2,4-triazol-3-amine (CAS 1241235-92-6)
- Mavacamten Impurity 10 (CAS 1642289-54-0)
- Ozenoxacin Impurity 86 (CAS CATO-C4X-279686)
- Pregabalin Impurity 70 (CAS 181289-39-4)
- 4-Cyano-3-ethyl-2-nitrobenzene-1-sulfonyl chloride (CAS 1807260-58-7)
- Agomelatine Impurity 53 (CAS CATO-C4X-110853)
- tert-Butyl 3-(tosyloxy)piperidine-1-carboxylate (CAS 85275-46-3)
- 22014-04-6 2-(2-Ethyl-piperidin-1-yl)-ethylamine DTXSID70423661 (CAS 22014-04-6)
- tert-Butyl 5-methyl-2-oxospiro[indoline-3,3'-pyrrolidine]-1'-carboxylate (CAS 2384992-51-0)
- (1S,4S)-tert-Butyl 2,5-diazabicyclo[2.2.2]octane-2-carboxylate hydrochloride (CAS 944086-67-3)
- [3-31]-Semaglutide D (Sodium salt) (CAS CATO-C4X-2226119)
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