Minoxidil Impurity 32 CAS CATO-C4X-170032
| CAS No. | CATO-C4X-170032 |
| Molecular Formula | C4H5ClN4O |
| Molecular Weight | 160.56 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.
As a process- or degradation-related impurity, Minoxidil Impurity 32 (CAS CATO-C4X-170032, C4H5ClN4O) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Minoxidil Impurity 32 (C4H5ClN4O) contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C4H5ClN4O |
| Molecular Weight | 160.56 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 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Minoxidil Standards
- Minoxidil EP Impurity A (CAS 35139-67-4)
- Minoxidil Impurity 70 (CAS CATO-C4X-170070)
- Minoxidil Impurity 60 (CAS CATO-C4X-170060)
- Minoxidil Impurity 20 (CAS 128304-92-7)
- Minoxidil Impurity 14 (CAS CATO-C4X-170014)
- Minoxidil Impurity 6 (CAS 116436-03-4)
- Minoxidil Impurity 58 (CAS CATO-C4X-170058)
- Minoxidil Impurity 53 (CAS CATO-C4X-170053)
Recommended Standards
- Urapidil Impurity 27 (CAS 31737-09-4)
- Fluorouracil Impurity 29 (CAS CATO-C4X-164929)
- Sulfadoxine Impurity 9 (CAS 1224097-08-8)
- 5-Chloro-2-methoxypyrimidin-4(3H)-one (CAS CATO-C4X-164925)
- Ampicillin Impurity 75 (CAS CATO-C4X-144375)
- Nitrofurantoin Impurity 2 (CAS 777-34-4)
- Tranilast Impurity 12 (CAS CATO-C4X-252912)
- 3-(3-Oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)propanoic acid (CAS 1708288-13-4)
- 3-bromo-6-methoxyimidazo[1,2-a]pyridine (CAS 1044733-59-6)
- 4-(2-((5-Amino-1,3,4-thiadiazol-2-yl)thio)ethoxy)benzonitrile (CAS 930073-11-3)
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- 3-Acetyl-4-isobutyloxazolidin-5-one (CAS 150577-30-3)
- Methyl 2-(quinolin-4-yl)acetate (CAS 158265-22-6)
- Allo-Thr5-Tirzepatide (CAS CATO-CPTD788934)
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