Loxoprofen Impurity 19 CAS 80530-55-8
| CAS No. | 80530-55-8 |
| Molecular Formula | C10H11ClO2 |
| Molecular Weight | 198.65 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 Loxoprofen Impurity 19 (CAS 80530-55-8), a pharmacopoeial impurity reference standard (molecular formula C10H11ClO2, MW 198.65 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C10H11ClO2, Loxoprofen Impurity 19 contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 198.65 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C10H11ClO2 |
| Molecular Weight | 198.65 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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.) | 1980 |
| Halogen Content | Cl-containing |
Related Loxoprofen Standards
- Loxoprofen Impurity 60 (CAS 132560-66-8)
- Loxoprofen Impurity 36 (CAS 639857-67-3)
- Loxoprofen Impurity 28 (CAS 1823911-62-1)
- Loxoprofen Impurity 58 (CAS 1551612-94-2)
- Loxoprofen Impurity 45 (CAS 99807-55-3)
- Loxoprofen Impurity 59 (CAS 132560-67-9)
- Loxoprofen Impurity 62 (CAS CATO-C4X-148862)
- Loxoprofen Impurity 48 (CAS 80530-54-7)
Recommended Standards
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- Nintedanib Impurity 64 (CAS 855860-75-2)
- Buprenorphine EP Impurity C (CAS 16614-60-1)
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- Duloxetine EP Impurity F Hydrochloride (CAS 2748376-86-3)
- 6-Ethyl-4-hydroxy-quinoline-3-carboxylic acid (CAS 35128-00-8)
- Benserazide impurity 43 (CAS CATO-C4X-142743)
- 4-cyclopropylsulfonylbenzenesulfonyl chloride (CAS 1556223-20-1)
- N-Butyl-2-(methylamino)acetamide (CAS 117194-70-4)
- 4-Bromo-N1-methyl-5-(trifluoromethyl)benzene-1,2-diamine (CAS 1007374-32-4)
- 3T-0640 865657-79-0 N-[(2Z)-5,6-dimethoxy-3-oxo-2-[(thiophen-2-yl)methylidene]-2,3-dihydro-1H-inden-1-yl]-2,2,2-trifluoroacetamide (CAS 865657-79-0)
- Tirzepatide Impurity 19 X TFA Salt (CAS CATO-C4X-324019)
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