Olopatadine Impurity 24 CAS 3607-17-8
| CAS No. | 3607-17-8 |
| Molecular Formula | C21H21BrP |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Olopatadine Impurity 24 (C21H21BrPBr) is characterized by organophosphorus functionality, bromine substitution, a polycyclic aromatic system. 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Olopatadine Impurity 24 (CAS 3607-17-8), a pharmacopoeial impurity reference standard (molecular formula C21H21BrPBr, MW 464.18 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
CATO manufactures Olopatadine Impurity 24 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 | C21H21BrP Br |
| Molecular Weight | 464.18 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Br-containing |
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
- Avanafil Impurity 31 (CAS CATO-C4X-111831)
- Ketorolac Impurity 72 (CAS CATO-C4X-166972)
- Ketoprofen EP Impurity E (CAS 59512-16-2)
- Methyl 2-aminocyclopentane-1-carboxylate hydrochloride (CAS 1333850-16-0)
- 3-Chloro-N-(3,4-dimethoxyphenyl)benzamide (CAS 362722-22-3)
- Ethyl 3-(3-nitrophenyl)acrylate (CAS 5396-71-4)
- N-(Pyrrolidin-3-ylmethyl)pivalamide hydrochloride (CAS 1346602-39-8)
- 2-(((tert-Butyldimethylsilyl)oxy)methyl)-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole (CAS 2763334-08-1)
- 2,3,5,6-Tetramethyl-1,4-bis(trimethylsilyl)-1,4-dihydropyrazine (CAS 78279-92-2)
- Liraglutide Impurity 26 (CAS CATO-C4X-199226)
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