4-Vinylaniline hydrochloride CAS 111981-34-1
| CAS No. | 111981-34-1 |
| Molecular Formula | C8H9N |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Vinylaniline hydrochloride.
4-Vinylaniline hydrochloride (CAS 111981-34-1), molecular formula C8H9NHCl and molecular weight 155.62 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H9NHCl, 4-Vinylaniline hydrochloride contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 155.62 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 4-Vinylaniline hydrochloride 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 | C8H9N HCl |
| Molecular Weight | 155.62 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 methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Vinylaniline Standards
Recommended Standards
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- 5-chloro-1-methyl-1H-indole-3-carbaldehyde (CAS 412284-65-2)
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- Divinyl sulphone (CAS 77-77-0)
- n-Dotetracontane (CAS 7098-20-6)
- Spiro[3.3]heptane-2-methanol (CAS 4483-67-4)
- Peptide YY (human) trifluoroacetate salt (CAS 118997-30-1)
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