Pranoprofen Impurity 55 CAS 56708-14-6
| CAS No. | 56708-14-6 |
| Molecular Formula | C15H14N2O2 |
| Molecular Weight | 254.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Pranoprofen Impurity 55 (CAS 56708-14-6) is a certified pharmaceutical impurity reference standard with the molecular formula C15H14N2O2 and a molecular weight of 254.28 g/mol.
The molecular framework of Pranoprofen Impurity 55 (C15H14N2O2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. 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).
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.
As a certified reference material (CRM), Pranoprofen Impurity 55 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 | C15H14N2O2 |
| Molecular Weight | 254.28 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 2 |
Related Pranoprofen Standards
- Pranoprofen (CAS 52549-17-4)
- Pranoprofen Impurity 34 (CAS 2688845-71-6)
- Pranoprofen Impurity 25 (CAS CATO-C4X-181125)
- Pranoprofen Impurity 44 (CAS CATO-C4X-181144)
- Pranoprofen Impurity 67 (CAS CATO-C4X-181167)
- Pranoprofen Impurity 42 (CAS CATO-C4X-181142)
- Pranoprofen Impurity 49 (CAS 1254691-84-3)
- Pranoprofen Impurity 54 (CAS CATO-C4X-181154)
Recommended Standards
- Nepafenac (CAS 78281-72-8)
- Epinastine Impurity 58 (CAS CATO-C4X-184058)
- Ipratropium Impurity 42 (CAS 54108-62-2)
- Esmolol Impurity 19 (CAS 108260-84-0)
- Mesalazine EP Impurity F (CAS 570-23-0)
- Ketoprofen Impurity 78 (CAS 136656-97-8)
- Ilaprazole Impurity 44 (CAS CATO-C4X-113044)
- 2,3-Dihydro-2-[3-(2-phenoxyethoxy)phenyl]-4(1H)-quinazolinone (CAS 1354095-56-9)
- 【禁售不询】Diphenoxylate Related Compound A CI(Secondary Standards traceble to USP) (CAS 28782-42-5)
- Rac-(1r,2r)-1-amino-2,3-dihydro-1h-indene-2-carboxylic acid hydrochloride, cis (CAS 135053-09-7)
- Ethyl 3-(methylamino)-3-thioxopropanoate (CAS 56409-14-4)
- Ethyl hexylcarbamate (CAS 7451-47-0)
- 4-Oxocyclohexane-1,2-dicarboxylic acid (CAS 90954-18-0)
- Tirzepatide Impurity 61 (CAS CATO-C4X-324061)
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