Loxoprofen Impurity 33 CAS 98986-08-4
| CAS No. | 98986-08-4 |
| Molecular Formula | C12H15BrO2 |
| Molecular Weight | 271.15 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 271.15 g/mol gives Loxoprofen Impurity 33 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Loxoprofen Impurity 33 (CAS 98986-08-4), a pharmacopoeial impurity reference standard (molecular formula C12H15BrO2, MW 271.15 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Loxoprofen Impurity 33 (C12H15BrO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 271.15 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Loxoprofen Impurity 33 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 | C12H15BrO2 |
| Molecular Weight | 271.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Br-containing |
Related Loxoprofen Standards
- Loxoprofen Impurity 5 (CAS 81762-82-5)
- Loxoprofen Impurity 149 (CAS CATO-C4X-1488149)
- Loxoprofen Impurity 159 (CAS CATO-C4X-1488159)
- Loxoprofen Impurity 56 (CAS 200554-09-2)
- Loxoprofen Impurity 160 (CAS CATO-C4X-1488160)
- Loxoprofen Dihydroxy Impurity (CAS 88378-22-7)
- Loxoprofen Impurity 3 (CAS 1091621-61-2)
- Loxoprofen Impurity 32 (CAS 2514697-36-8)
Recommended Standards
- 5-Bromo-2-(3-methylbutoxy)benzaldehyde 669739-11-1 7835AE C12H15BrO2 (CAS 669739-11-1)
- 7-Ethyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole (CAS 1072811-26-7)
- UF010, 98% (CAS 537672-41-6)
- 2-Methyl-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanenitrile (CAS 1082066-30-5)
- Ceftazidime Impurity 86 (CAS CATO-C4X-121286)
- Amiodarone EP Impurity A (CAS 23551-25-9)
- Tenofovir disoproxil Impurity 27 (CAS 2491-20-5)
- Vonoprazan Fumarate Impurity 74 (CAS 4847-34-1)
- N-Cyclopropylformamide (CAS 58644-54-5)
- 2-(3-(4-Fluorophenyl)-5-(trifluoromethyl)pyridin-2-yl)acetic acid (CAS 1214385-36-0)
- 2-Fluoro-5-(pyridin-3-yl)benzaldehyde (CAS 1178350-70-3)
- 1,4-Dihydro-6,7-dimethyl-1,4-epoxynaphthalene (CAS 19061-36-0)
- 5-(Trifluoromethyl)-9-oxa-2-azaspiro[5.5]undecan-3-one (CAS 1909308-87-7)
- Semaglutide impurity 41 (CAS CATO-C4X-222641)
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