Tulobuterol Impurity 35 CAS 1597775-10-4
| CAS No. | 1597775-10-4 |
| Molecular Formula | C8H8ClIO |
| Molecular Weight | 282.51 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.
Tulobuterol Impurity 35 (CAS 1597775-10-4) is a certified pharmaceutical impurity reference standard with the molecular formula C8H8ClIO and a molecular weight of 282.51 g/mol.
The molecular framework of Tulobuterol Impurity 35 (C8H8ClIO) is characterized by a hydroxyl group, an ether linkage, chlorine/iodine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, 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).
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 | C8H8ClIO |
| Molecular Weight | 282.51 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl/I-containing |
Related Tulobuterol Standards
- Tulobuterol Impurity 25 (CAS CATO-C4X-213425)
- Tulobuterol Impurity 27 (CAS CATO-C4X-213427)
- Tulobuterol Impurity 7 (CAS CATO-C4X-21347)
- Tulobuterol Impurity 22 (CAS 5639-00-9)
- Tulobuterol Impurity 15 (CAS CATO-C4X-213415)
- Tulobuterol Impurity 26 (CAS CATO-C4X-213426)
- Tulobuterol impurity 24 (CAS 25847-29-4)
- Tulobuterol Impurity N6 (CAS 34356-83-7)
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