Olopatadine Impurity 38 CAS CATO-C4X-171838
| CAS No. | CATO-C4X-171838 |
| Molecular Formula | C24H29NO3 |
| Molecular Weight | N/A |
| 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.
Olopatadine Impurity 38 (CAS CATO-C4X-171838) is a certified pharmaceutical impurity reference standard with the molecular formula C24H29NO3HCl and a molecular weight of 415.96 g/mol.
The molecular framework of Olopatadine Impurity 38 (C24H29NO3HCl) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C24H29NO3 HCl |
| Molecular Weight | 415.96 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Olopatadine Standards
- Olopatadine Impurity 44 (CAS 111088-69-8)
- Olopatadine Impurity 43 (CAS 1127893-02-0)
- Olopatadine Methyl Ester HCl (CAS 113805-71-3（free base）)
- Olopatadine Impurity 51 (CAS 113806-01-2)
- Olopatadine Ethyl Ester (HCl) (CAS 113806-03-4)
- Olopatadine (CAS 113806-05-6)
- (E)-Olopatadine (CAS 113806-06-7)
- Olopatadine Impurity N3 (CAS 113835-76-0)
Recommended Standards
- Methenamine Impurity 1 (CAS 6623-56-9)
- Relebactam Impurity 42 (CAS CATO-C4X-214442)
- Trazodone Impurity 91 (CAS 53818-10-3 (free base))
- Phenyl 6-methyl-2-(p-tolyl)quinoline-4-carboxylate (CAS 355419-81-7)
- 65-61-2 YO2175B15I Acridine Orange Acridine, 3,6-bis(dimethylamino)-, monohydrochloride 3,6-Acridinediamine, N,N,N',N'-tetramethyl-, monohydrochloride N,N,N',N'-Tetramethylacridin-3,6-yldiamine hydrochloride 3,6-Acridinediamine, N3,N3,N6,N6-tetramethyl-, hydrochloride (1:1) C.I. 46005 C.I. Basic Orange 14 Acridine Orange N Acridine Orange R Acridine Orange NO Acridine Orange NS Basic Orange 14 Basic Orange 3RN 3,6-Bis(dimethylamino)acridine hydrochloride CCRIS 736 EINECS 200-614-0 NSC 56324 Rhoduline Orange Rhoduline Orange NO Sumitomo Acridine Orange NO Sumitomo Acridine Orange RK conc UNII-YO2175B15I (CAS 65-61-2)
- N′-Nitro-N-nitroso-N-propylguanidine (CAS 13010-07-6)
- Pentane-1,5-diylbis(triphenylphosphonium) bromide (CAS 22884-31-7)
- 81273-81-6 L-Lactic acid-1-13C, sodium salt solution Sodium L-lactate-1-13C solution (CAS 81273-81-6)
- Methyl 4-bromo-5-hydroxypicolinate (CAS 1256836-99-3)
- Semaglutide impurity 76 (CAS CATO-C4X-222676)
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