Minoxidil Impurity 70 CAS CATO-C4X-170070
| CAS No. | CATO-C4X-170070 |
| Molecular Formula | C4H4ClN3O2 |
| Molecular Weight | 161.55 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.
CATO supplies Minoxidil Impurity 70 (CAS CATO-C4X-170070), a pharmacopoeial impurity reference standard (molecular formula C4H4ClN3O2, MW 161.55 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Minoxidil Impurity 70 (C4H4ClN3O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 161.55 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 | C4H4ClN3O2 |
| Molecular Weight | 161.55 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Minoxidil Standards
- Minoxidil EP Impurity A (CAS 35139-67-4)
- Minoxidil Impurity 32 (CAS CATO-C4X-170032)
- Minoxidil Impurity 60 (CAS CATO-C4X-170060)
- Minoxidil Impurity 20 (CAS 128304-92-7)
- Minoxidil Impurity 14 (CAS CATO-C4X-170014)
- Minoxidil Impurity 53 (CAS CATO-C4X-170053)
- Minoxidil Impurity 59 (CAS CATO-C4X-170059)
- Minoxidil Impurity 6 (CAS 116436-03-4)
Recommended Standards
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- 2-Chloro-5-fluoro-3-methoxypyridine (CAS 1097264-89-5)
- Olodaterol Impurity 15 (CAS CATO-C4X-194315)
- Vonoprazan Impurity 137 (CAS CATO-C4X-1020137)
- Bortezomib Impurity 8 (CAS 886979-81-3)
- Penfluridol Impurity 10 (CAS 262272-58-2)
- [5-(3,4-Dichlorophenyl)-1,2-oxazol-3-yl]methyl N-(4-methylphenyl)carbamate (CAS 343374-60-7)
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Why CATO?
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