Dihydralazine Hydrochloride EP Impurity C CAS 304-20-1
| CAS No. | 304-20-1 |
| Molecular Formula | C8H8N4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 196.64 g/mol gives Dihydralazine Hydrochloride EP Impurity C distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Dihydralazine Hydrochloride EP Impurity C (CAS 304-20-1) is a certified pharmaceutical impurity reference standard with the molecular formula C8H8N4HCl and a molecular weight of 196.64 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution, Dihydralazine Hydrochloride EP Impurity C is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 196.64 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), Dihydralazine Hydrochloride EP Impurity C meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H8N4 HCl |
| Molecular Weight | 196.64 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | >95% |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Dihydralazine Standards
Recommended Standards
- Hydantoin Impurity 5 (CAS 1433954-32-5)
- Olaparib Impurity 81 (CAS 4122-57-0)
- Terbutaline Impurity 25 (CAS 2352882-26-7)
- (R)-1-(3-chloro-4-methoxyphenyl)-2,2,2-trifluoroethan-1-amine (CAS 1213932-14-9)
- Dicyclohexyl(4-(N,N-dimethylamino)phenyl)phosphine 40438-64-0 4-(Dicyclohexylphosphino)-N,N-dimethylaniline (CAS 40438-64-0)
- 3-(2-Methylmorpholino)aniline (CAS 1152587-85-3)
- Ethyl isoindoline-5-carboxylatehydrochloride (CAS 1159826-50-2)
- tert-Butyl 4-((4-((5-vinylpyrimidin-2-yl)amino)phenyl)sulfonyl)piperidine-1-carboxylate (CAS 937012-25-4)
- 1-Chloro-4-nitrobutane (CAS 41168-66-5)
- (Glu1)-Fibrinopeptide B (human) (CAS 103213-49-6)
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