Betamethasone Impurity 21 CAS 154713-07-2
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 154713-07-2 |
| Molecular Formula | C27H39FO6 |
| Molecular Weight | 478.59 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Betamethasone Impurity 21 (CAS 154713-07-2) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C27H39FO6. Molecular weight: 478.59 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C27H39FO6 |
| Molecular Weight | 478.59 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Halogen Content | F-containing |
Related Betamethasone Standards
- Betamethasone Cyclic 17,21-(Ethyl Orthopropionate) (CAS 1062-09-5)
- Betamethasone Impurity N82 (CAS 123013-29-6)
- Betamethasone Valerate EP Impurity E (Betamethasone 21-Valerate) (CAS 2240-28-0)
- Betamethasone Valerate EP Impurity C (CAS 33755-46-3)
- Betamethasone 17A-Valerate (CAS 2152-44-5)
- Betamethasone Acetate EP Impurity C (CAS 330157-05-6)
- Betamethasone Impurity 139 (CAS CATO-C4X-1437139)
- Betamethasone Dipropionate EP Impurity F (CAS 66917-44-0)
Recommended Standards
- Olmesartan Impurity 78 (CAS 133909-97-4)
- Tris-(p-TerT-buToxyphenyl)phosphine (CAS 118854-31-2)
- Olmesartan Impurity 16 (CAS 124750-53-4)
- Niraparib Impurity 4 (CAS 138229-59-1)
- Leuprorelin EP Impurity G (CAS 112710-57-3)
- 6-Iodo-5-isopropyl-2,4(1H,3H)-pyrimidinedione (CAS 936945-30-1)
- Dimethyl 2-(4-nitrophenyl)-2-propylmalonate (CAS 685108-29-6)
- 2-[4-(4-fluorophenoxy)phenyl]ethan-1-amine hydrochloride (CAS 1423029-07-5)
- 4-Amino-1-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-5,6-dihydro-1,3,5-triazin-2(1H)-one hydrochloride (CAS 62402-31-7)
- D-Lys20-Tirzepatide (CAS CATO-CPTD788914)
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