Betamethasone EP Impurity E CAS 981-34-0
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 981-34-0 |
| Molecular Formula | C22H28O5 |
| Molecular Weight | 372.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Betamethasone EP Impurity E (CAS 981-34-0) is a pharmacopoeial impurity standards certified reference material from CATO. Molecular formula: C22H28O5. Molecular weight: 372.45 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C22H28O5 |
| Molecular Weight | 372.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, 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 |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Betamethasone Standards
- Betamethasone Impurity 120 (CAS 82536-56-9)
- Betamethasone Impurity 2 (CAS CATO-C4X-14372)
- Betamethasone-delta17,20 21-Aldehyde (Mixture of Isomers) (CAS 6762-45-4)
- Betamethasone Enol Aldehyde Z Isomer (CAS 52647-06-0)
- Betamethasone Enol Aldehyde E Isomer (CAS 52647-07-1)
- Betamethasone Impurity 9 (CAS 2597-76-4)
- Betamethasone EP Impurity G (CAS 85700-75-0)
- Betamethasone impurity 91 (CAS 114488-14-1)
Recommended Standards
- Bisoprolol Impurity 89 (CAS 2417155-12-3)
- Dexamethasone impurity 91 (CAS CATO-C4X-116591)
- Dexamethasone EP Impurity I (CAS 14622-47-0)
- Etoricoxib Impurity 51 (CAS CATO-C4X-108051)
- Rosuvastatin EP Impurity F (CAS 289042-12-2)
- 1-(1-Methyl-1h-imidazol-2-yl)-2-(methylamino)ethan-1-ol (CAS 1510714-11-0)
- 4-Methyl-4-phenylpentane-2-sulfonamide (CAS 1247734-85-5)
- 2-(Methylamino)-2-(thiophen-2-yl)acetic acid hydrochloride (CAS 1255716-98-3)
- 2-Methyl-2-p-tolyl-propylamine (CAS 786602-39-9)
- Semaglutide Impurity 1(OtBu-Ste-D-γGlu(OtBu)-AEEA-AEEA-OH) (CAS CATO-C4X-22261)
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 13829788188 / jacky.chen@cato-chem.com