Betamethasone Impurity 87 CAS 1549-35-5
| CAS No. | 1549-35-5 |
| Molecular Formula | - |
| Molecular Weight | 421.48 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Betamethasone Impurity 87 (CAS 1549-35-5), a pharmacopoeial impurity reference standard (molecular formula N/A, MW 421.48 g/mol) used for the identification and quantification of trace impurities in APIs.
Betamethasone Impurity 87 is supplied as a fully characterized reference material; its structural identity, assigned purity, and stability data are documented in the batch-specific Certificate of Analysis (COA).
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 | C23H30AFO6 |
| Molecular Weight | 421.48 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
Related Betamethasone Standards
- Betamethasone Impurity 116 (CAS CATO-C4X-1437116)
- Betamethasone impurity 62 (CAS CATO-C4X-143762)
- Betamethasone Impurity 127 (CAS CATO-C4X-1437127)
- Betamethasone Acetate EP Impurity D (CAS 912-38-9)
- Betamethasone impurity 105 (CAS CATO-C4X-1437105)
- Betamethasone Impurity 56 (CAS 5534-12-3)
- Betamethasone 21-Acetate (CAS 987-24-6)
- Betamethasone impurity 51 (CAS 1184871-61-1)
Recommended Standards
- Citalopram Impurity 54 (CAS CATO-C4X-110954)
- Vilanterol Impurity 37 (CAS 452339-70-7)
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- Malic Acid Impurity 10 (CAS 1800467-68-8)
- Brexpiprazole Impurity N19 (CAS 2059942-14-0)
- Butenafine Impurity 19 (CAS CATO-C4X-159619)
- 2-(2-((3-Chlorophenyl)amino)phenyl)acetic acid (CAS 320777-05-7)
- 2-(4-Chlorophenyl)-N-(2-(3-(4-chlorophenyl)-6-oxopyridazin-1(6H)-yl)ethyl)acetamide (CAS 921851-77-6)
- 2-Methoxy-5-(pentafluoro-lambda6-sulfanyl)aniline (CAS 1211587-84-6)
- 2-Methyl-4-pyrrolidin-2-yl-pyrimidine hydrochloride (CAS 1361115-71-0)
- 2-(4-(Trifluoromethoxy)phenoxy)ethanethioamide (CAS 952183-07-2)
- 2-(2-(Furan-2-yl)vinyl)-4,6-bis(trichloromethyl)-1,3,5-triazine (CAS 154880-05-4)
- Angiotensin III Antipeptide (CAS 133605-55-7)
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