Anastrozole Impurity 14 CAS 1338800-82-0
| CAS No. | 1338800-82-0 |
| Molecular Formula | C17H20N4O2 |
| Molecular Weight | 312.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Anastrozole Impurity 14.
Anastrozole Impurity 14 (CAS 1338800-82-0) is a certified pharmaceutical impurity reference standard with the molecular formula C17H20N4O2 and a molecular weight of 312.37 g/mol.
Based on its molecular formula C17H20N4O2, Anastrozole Impurity 14 contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 312.37 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).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
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 | C17H20N4O2 |
| Molecular Weight | 312.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 4 |
Related Anastrozole Standards
- Anastrozole Impurity 8 (CAS CATO-C4X-12398)
- Anastrozole Impurity 9 (CAS 120512-03-0)
- Anastrozole Impurity 39 (CAS CATO-C4X-123939)
- Anastrozole Impurity 30 (CAS CATO-C4X-123930)
- Anastrozole-d12 (CAS 120512-32-5)
- Anastrozole EP Impurity C (CAS 120511-84-4)
- Anastrozole Impurity 28 (CAS CATO-C4X-123928)
- Anastrozole Impurity 36 (CAS CATO-C4X-123936)
Recommended Standards
- Olanzapine Impurity 20 (CAS 1017241-34-7)
- Ruxolitinib Impurity 68 (CAS CATO-C4X-205868)
- Tofacitinib Base (CAS 477600-75-2)
- Piribedil Impurity 11 (CAS CATO-C4X-281311)
- Atosiban Impurity 30 (CAS CATO-C4X-229330)
- Propiverine Impurity N1 HCl (CAS 54556-99-9)
- Ponatinib Impurity 33 (CAS CATO-C4X-226933)
- 1-((4-Fluorophenyl)sulfonyl)-3-methylbenzene (CAS 87787-49-3)
- 4-(1,3-Dioxaindan-5-yl)-3-ethyl-1h-pyrazol-5-amine (CAS 1187767-30-1)
- 4-((3R,3'S,3a'S,6a'R)-3'-Benzyl-6-chloro-7-methyl-2,4',6'-trioxo-2',3',3a',4',6',6a'-hexahydro-5'H-spiro[indoline-3,1'-pyrrolo[3,4-c]pyrrol]-5'-yl)phenyl acetate (CAS 956249-37-9)
- N-(2-Methylphenyl)-4,5-dihydro-1,3-thiazol-2-amine (CAS 35160-10-2)
- Ethyl 3,5-dibromo-2,4-difluorophenylacetate (CAS 1804414-69-4)
- Methyl 4-bromo-2-oxabicyclo[2.2.2]Octane-1-carboxylate (CAS 2375194-01-5)
- Semaglutide Impurity 167 (CAS CATO-C4X-2226167)
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