Anastrozole Impurity 35 CAS 2384659-42-9
| CAS No. | 2384659-42-9 |
| Molecular Formula | C10H10BrN |
| Molecular Weight | 224.10 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 Impurity 35 (CAS 2384659-42-9), a pharmacopoeial impurity reference standard (molecular formula C10H10BrN, MW 224.10 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Anastrozole Impurity 35 (C10H10BrN) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 224.10 g/mol, it falls into the medium-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).
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 | C10H10BrN |
| Molecular Weight | 224.10 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Anastrozole Standards
- Anastrozole EP Impurity H (CAS 120511-72-0)
- Anastrozole Impurity 29 (CAS CATO-C4X-123929)
- Anastrozole Impurity 26 (CAS 120512-38-1)
- Anastrozole Impurity 18 (CAS 120511-89-9)
- Anastrozole EP Impurity E (CAS 120511-88-8)
- Anastrozole Impurity 3 (CAS 120512-37-0)
- Anastrozole Impurity 25 (CAS CATO-C4X-123925)
- Anastrozole Impurity 2 (CAS 120512-36-9)
Recommended Standards
- (6-Bromo-5-methoxy-2-pyridinyl)methanol 5072AC 905562-91-6 C7H8BrNO2 (CAS 905562-91-6)
- Upadacitinib Impurity 54 (CAS 406-11-1)
- 5-bromanyl-2,3-dimethoxy-pyridine 5-bromo-2,3-dimethoxypyridine 52605-98-8 A829170 (CAS 52605-98-8)
- Indoramin EP Impurity A (CAS 3389-21-7)
- Bicalutamide Impurity 22 (CAS 405-31-2)
- Clopidogrel Impurity 985 (CAS CATO-C4X-1029985)
- Imrecoxib Impurity 11 (CAS 896729-07-0)
- Finerenone Impurity 54 (CAS CATO-C4X-288054)
- 3-Chlorophenanthrene (CAS 715-51-5)
- 5-(7-Methoxy-benzofuran-2-yl)-4-methyl-4H-[1,2,4]triazole-3-thiol (CAS 737775-29-0)
- 2,2'-(Adamantane-1,3-diyl)bis(propan-2-ol) (CAS 101725-90-0)
- 3-Bromo-1-(3,4-dihydroquinolin-1(2H)-yl)propan-1-one (CAS 91720-40-0)
- Methyl 6-oxo-1,6-dihydropyridine-3-carboxylate hydrochloride (CAS 1221722-65-1)
- Semaglutide impurity 83 (CAS CATO-C4X-222683)
Why CATO?
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