Olopatadine Impurity 42 Formate CAS CATO-C4X-171842
| CAS No. | CATO-C4X-171842 |
| Molecular Formula | C21H23NO4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Olopatadine Impurity 42 Formate (C21H23NO4CH2O2) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, 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.
Olopatadine Impurity 42 Formate (CAS CATO-C4X-171842) is a certified pharmaceutical impurity reference standard with the molecular formula C21H23NO4CH2O2 and a molecular weight of 399.44 g/mol.
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.
CATO manufactures Olopatadine Impurity 42 Formate 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.
Physical & Chemical Properties
| Molecular Formula | C21H23NO4 CH2O2 |
| Molecular Weight | 399.44 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| 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
- Pidotimod Impurity 9 (CAS CATO-C4X-10789)
- Ruxolitinib Impurity 35 (CAS CATO-C4X-205835)
- Capivasertib Impurity 45 (CAS CATO-C4X-331245)
- N-Isopropyl-2-methoxy-5-nitrobenzenesulfonamide (CAS 1457138-78-1)
- n-(2,5-Dimethylbenzyl)-3-methylbutan-1-amine (CAS 1193045-79-2)
- 2-Chloro-1-(4-(p-tolyl)piperazin-1-yl)ethan-1-one (CAS 63208-61-7)
- 1-((5-Isobutyloxazol-4-yl)methyl)piperidin-4-amine dihydrochloride (CAS 2140316-60-3)
- (4R)-1-Acetyl-1-hydroxy-4-(1-methylethenyl)-2-cyclohexene-1-methanol (4R)-1-Hydroxy-4-(1-methylethenyl)-2-cyclohexene-1-methanol 1-Acetate (Mixture of Diastereomers) 936001-98-8 (CAS 936001-98-8)
- 2-(4-Amino-1-methylpiperidin-4-yl)acetic acid (CAS 933752-88-6)
- Semaglutide impurity 286 (CAS CATO-C4X-2226286)
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