Firocoxib Impurity 1 CAS CATO-C4X-32111
| CAS No. | CATO-C4X-32111 |
| Molecular Formula | C17H20O4S |
| Molecular Weight | 320.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Firocoxib Impurity 1 (CAS CATO-C4X-32111), a pharmacopoeial impurity reference standard (molecular formula C17H20O4S, MW 320.40 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage, Firocoxib Impurity 1 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 320.40 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
As a certified reference material (CRM), Firocoxib Impurity 1 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C17H20O4S |
| Molecular Weight | 320.40 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, 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 |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Sulfur Atoms | 1 |
Related Firocoxib Standards
- Firocoxib Impurity 6 (CAS CATO-C4X-32116)
- Firocoxib Impurity 2 (CAS 189955-79-1)
- Firocoxib (CAS 189954-96-9)
- Firocoxib Impurity 2 (CAS CATO-C4X-32112)
- Firocoxib Impurity 3 (CAS CATO-C4X-32113)
- Firocoxib Impurity 4 (CAS 246869-15-8)
- Firocoxib Impurity 1 (CAS 204390-60-3)
- Firocoxib Impurity 1 (CAS 53207-58-2)
Recommended Standards
- Dobutamine Impurity 9 (CAS CATO-C4X-12989)
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- 1-(2-(1H-indol-3-yl)ethyl)-3-(4-cyanophenyl)thiourea (CAS 1023556-71-9)
- Norfloxacin Impurity 67 (CAS CATO-C4X-146867)
- 2-Butyl-4-chloro-1H-imidazole-5-carboxylic acid (CAS 149968-28-5)
- Atorvastatin Impurity 146 (CAS CATO-C4X-1132146)
- 1-[1-(3-methoxyphenyl)ethyl]piperazine (CAS 517856-21-2)
- 2,6-Dichloro-4-(2,4,6-triphenyl-1-pyridinio)phenolate (CAS 121792-58-3)
- N,N-dimethyl-2-((2-methyl-5-(trifluoromethyl)phenyl)amino)acetamide (CAS 1394781-37-3)
- trans-5-Hydroxyferulic acid (CAS 110642-42-7)
- (Isopropylsulfonyl)benzene (CAS 4238-09-9)
- Irsogladine Impurity 3 (CAS CATO-C4X-29143)
- Tirzepatide Impurity 21 X TFA Salt (CAS CATO-C4X-324021)
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