Ciclesonide Impurity 13 CAS CATO-C4X-320113
| CAS No. | CATO-C4X-320113 |
| Molecular Formula | C28H36O6 |
| Molecular Weight | 468.58 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Ciclesonide Impurity 13 (C28H36O6) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 468.58 g/mol, it falls into the moderately-high-molecular-weight range. 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).
Ciclesonide Impurity 13 (CAS CATO-C4X-320113) is a certified pharmaceutical impurity reference standard with the molecular formula C28H36O6 and a molecular weight of 468.58 g/mol.
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.
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 | C28H36O6 |
| Molecular Weight | 468.58 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Ciclesonide Standards
- Ciclesonide Impurity 14 (CAS CATO-C4X-320114)
- Ciclesonide Impurity 15 (CAS 161115-60-2)
- Ciclesonide Impurity 3 (CAS 204444-44-0)
- Ciclesonide Impurity 2 (CAS 886861-17-2)
- Ciclesonide Impurity 16 (CAS CATO-C4X-320116)
- Ciclesonide Impurity 10 (CAS CATO-C4X-320110)
- Ciclesonide Impurity 12 (CAS CATO-C4X-320112)
- Ciclesonide Impurity 15 (CAS 3035286-87-1)
Recommended Standards
- Beraprost Impurity 29 (and enantiomer) (CAS CATO-C4X-218429)
- (2R,2'R)-4,4'-disulfanediylbis(2-((tert-butoxycarbonyl)amino)butanoic acid) (CAS 113132-85-7)
- Beclometasone Dipropionate Monohydrate EP Impurity I (CAS 52092-12-3)
- N,N'-DiBoc-DL-Cystine dimethyl ester (CAS 1173670-56-8)
- Epinephrine Impurity 67 (CAS CATO-C4X-184967)
- Benserazide impurity 33 (CAS CATO-C4X-142733)
- Vonoprazan Fumarate Impurity 17 (CAS 1883595-38-7)
- Doxorubicin Impurity 24 (CAS CATO-C4X-203324)
- Oplopanaxoside C (CAS 162341-29-9)
- Esmolol Impurity 36 (CAS CATO-C4X-189136)
- 1-(3-(Diethylamino)propyl)guanidine (CAS 45017-94-5)
- 3-((5-Bromo-2-ethoxy-4-formylphenoxy)methyl)benzoic acid (CAS 1159693-38-5)
- Boc-Ethylmercapto-L-cysteine (dicyclohexylammonium) salt (CAS 25461-00-1)
- D-[Ala]24-Semaglutide (CAS CATO-C4X-2226126)
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