Halometasone impurity 17 CAS 35540-75-1
| CAS No. | 35540-75-1 |
| Molecular Formula | C22H25ClF2O5 |
| Molecular Weight | 442.88 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Halometasone impurity 17 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Halometasone impurity 17 (CAS 35540-75-1) is a certified pharmaceutical impurity reference standard with the molecular formula C22H25ClF2O5 and a molecular weight of 442.88 g/mol.
Halometasone impurity 17 (C22H25ClF2O5) contains a flavonoid core, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C22H25ClF2O5 |
| Molecular Weight | 442.88 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Halogen Content | F/Cl-containing |
Related Halometasone Standards
- Halometasone impurity 15 (CAS CATO-C4X-144615)
- Halometasone Impurity 4 (CAS CATO-C4X-14464)
- Halometasone Impurity 67 (CAS CATO-C4X-14467)
- Halometasone (CAS 50629-82-8)
- Halometasone Impurity 6 (CAS CATO-C4X-14466)
- Halometasone Impurity N2 (CAS 80157-55-7)
- Halometasone Impurity 9 (CAS CATO-C4X-14469)
- Halometasone impurity 14 (CAS CATO-C4X-144614)
Recommended Standards
- 7-(3-(((4-Chlorophenyl)sulfonyl)methyl)-4-nitrophenyl)-2-methylpyrazolo[1,5-a]pyrimidine (CAS 691868-58-3)
- 5-Chloro-4-iodo-1-(triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridine (CAS 1040682-76-5)
- 3-{2-[(4-chlorophenyl)methoxy]phenyl}-1-(4-fluorobenzenesulfonyl)-1H-pyrazole (CAS 477713-39-6)
- Afatinib Impurity 89 (CAS 2983348-69-0)
- Tamsulosin Impurity 27 HCl (CAS CATO-C4X-118727)
- Dabigatran Impurity 108 (Z-Isomer) (CAS CATO-C4X-1089108)
- Sarpogrelate Impurity 27 (CAS CATO-C4X-291327)
- N-(2-Furylmethyl)-6-methoxy-1,3-benzothiazol-2-amine (CAS 16763-25-0)
- 1-(2,5-Difluorophenyl)pentan-1-one (CAS 1094275-54-3)
- 1-Benzyl-2-(4-(tert-butyl)phenyl)-6-oxopiperidine-3-carboxylic acid (CAS 952182-64-8)
- (1-Methylcyclohexanyl)methyl-4-aminophenyl Ether 1-Methyl-1-cyclohexanemethyl-4-aminophenyl 887406-96-4 (CAS 887406-96-4)
- 1-(1H-Indol-5-yl)-N-methylmethanamine hemioxalate (CAS 1573547-37-1)
- 2-{[2-(2,2-Diphenylacetyl)hydrazino]carbonyl}cyclohexanecarboxylic acid (CAS 900592-36-1)
- 59880-97-6 Chemotactic peptide F-Met-Leu-Phe L-Phenylalanine, N-(N-(N-formyl-L-methionyl)-L-leucyl)- N-Formyl-L-methionyl-L-leucyl-L-phenylalanine N-Formyl-Met-Leu-Phe N-Formylmethionine leucyl-phenylalanine fMLF fMLP (misnomer but widely used) (CAS 59880-97-6)
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