Anastrozole EP Impurity B CAS 1216898-82-6
| CAS No. | 1216898-82-6 |
| Molecular Formula | C30H31N9 |
| Molecular Weight | 517.63 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Anastrozole EP Impurity B meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Anastrozole EP Impurity B (CAS 1216898-82-6) is a certified pharmaceutical impurity reference standard with the molecular formula C30H31N9 and a molecular weight of 517.63 g/mol.
The molecular framework of Anastrozole EP Impurity B (C30H31N9) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C30H31N9 |
| Molecular Weight | 517.63 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 20.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 9 |
Related Anastrozole Standards
- Anastrozole-d (CAS 1329809-14-4)
- Anastrozole Impurity 33 (CAS CATO-C4X-123933)
- Anastrozole Impurity 34 (CAS CATO-C4X-123934)
- Anastrozole EP Impurity D (CAS 1027160-12-8)
- Anastrozole Impurity 19 (CAS 918312-71-7)
- Anastrozole Impurity 21 (CAS CATO-C4X-123921)
- Anastrozole Impurity N2 (CAS 1186102-55-5)
- Anastrozole Impurity 37 (CAS CATO-C4X-123937)
Recommended Standards
- Pitavastatin Impurity 9(S,S) (CAS CATO-C4X-10379)
- Telmisartan-d3 (CAS 1189889-44-8)
- Pitavastatin Impurity 8(R,S) (CAS CATO-C4X-10378)
- Cefotiam Impurity 32 (CAS CATO-C4X-120432)
- Cisatracurium Besilate EP Impurity T (CAS 112242-41-8)
- Pimavanserin Impurity 50 (CAS CATO-C4X-193850)
- Epinastine Impurity 51 (CAS CATO-C4X-184051)
- 3-(2,4-Difluoro-5-methylphenyl)acrylic acid (CAS 1562311-33-4)
- 2-(3-Hydroxyphenyl)isoindoline-1,3-dione (CAS 59479-66-2)
- 4-(Indolin-5-yl)morpholine (CAS 959238-58-5)
- 3-Fluoro-N-(1-methoxypropan-2-yl)-2-methylaniline (CAS 1247859-87-5)
- (2R,3R,4S,5S,6S)-2-(Acetoxymethyl)-6-hydroxytetrahydro-2H-pyran-3,4,5-triyl triacetate (CAS 22860-22-6)
- Diethyl-L-alanine (CAS 66249-29-4)
- Cyclolinopeptide B (CAS 193139-41-2)
Why CATO?
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