Hydralazine Impurity 4 CAS CATO-C4X-16594
| CAS No. | CATO-C4X-16594 |
| Molecular Formula | C24H16N8 |
| Molecular Weight | 416.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Hydralazine Impurity 4 (CAS CATO-C4X-16594), a pharmacopoeial impurity reference standard (molecular formula C24H16N8, MW 416.44 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C24H16N8, Hydralazine Impurity 4 contains a nitrogen-containing heterocyclic scaffold, a nitrile group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 416.44 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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.
Physical & Chemical Properties
| Molecular Formula | C24H16N8 |
| Molecular Weight | 416.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 21.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 8 |
Related Hydralazine Standards
- Hydralazine Impurity 2 (CAS 24030-07-7)
- Hydralazine Impurity 3 (CAS 103429-71-6)
- Hydralazine Impurity 5 (CAS 55294-87-6)
- Hydralazine-15N4 Pyruvic Acid Hydrazone (CAS 1346606-25-4)
- Hydralazine Pyruvic Acid Hydrazone (Mixture of cis and Trans): (CAS 67536-13-4)
- Hydralazine Impurity 6 (CAS 59283-60-2)
- Hydralazine Impurity 2 (CAS 600707-30-0)
- Hydralazine Impurity 1 (CAS 234-80-0)
Recommended Standards
- 2-(3-(1H-pyrrol-1-yl)thiophen-2-yl)-5-(thiophen-2-yl)-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine (CAS 439109-51-0)
- Nicosulfuron D6 (CAS 1189419-41-7)
- (1-Methyl-3-phenyl-5-(p-tolyloxy)-1H-pyrazol-4-yl)methyl 4-fluorobenzoate (CAS 318247-59-5)
- 2-[(2,2-Dimethyl-2,3-dihydro-1-benzofuran-7-yl)oxy]-N-{[(4-nitrophenyl)carbamothioyl]amino}acetamide (CAS 1024193-20-1)
- Ozagrel Impurity 42 (CAS CATO-C4X-197142)
- Belumosudil Impurity 64 (CAS CATO-C4X-298864)
- Tofacitinib Impurity 121 (CAS 1228879-37-5)
- Sodium orthosilicate (CAS 13472-30-5)
- 4-[3-(pyrrolidin-1-yl)propyl]piperidine (CAS 933746-67-9)
- 3-(3-Chlorophenyl)-2,2-dimethylpyrrolidine (CAS 1249327-23-8)
- Tropicamide Impurity 12 (CAS CATO-C4X-215012)
- Ethyl(5-fluoro-2-methoxyphenyl)sulfane (CAS 1314929-19-5)
- 4-(4-Carboxy-3-fluorophenyl)-2-hydroxypyridine (CAS 1261895-92-4)
- Semaglutide Impurity 158 (x TFA Salt) (CAS CATO-C4X-2226158)
Why CATO?
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com