Mesalazine Impurity 44 CAS 607-87-4
| CAS No. | 607-87-4 |
| Molecular Formula | C14H10O5 |
| Molecular Weight | 258.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Mesalazine Impurity 44 (CAS 607-87-4) is a certified pharmaceutical impurity reference standard with the molecular formula C14H10O5 and a molecular weight of 258.23 g/mol.
Structurally, Mesalazine Impurity 44 (C14H10O5) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 258.23 g/mol, it falls into the medium-molecular-weight range. 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).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C14H10O5 |
| Molecular Weight | 258.23 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1957 |
Related Mesalazine Standards
- Mesalazine Impurity 2 (CAS 876903-48-9)
- Mesalazine Impurity 55 (CAS CATO-C4X-132455)
- Mesalazine Impurity 45 (CAS CATO-C4X-132445)
- Mesalazine Impurity 28 (CAS 40038-46-8)
- Mesalazine EP Impurity I (CAS 3147-53-3)
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- Mesalazine Impurity 47 (CAS 13300-63-5)
- Mesalazine Impurity 54 (CAS CATO-C4X-132454)
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