Hydroxyzine Impurity 9 CAS 1031-92-1
| CAS No. | 1031-92-1 |
| Molecular Formula | C17H19ClN2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| 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.
Hydroxyzine Impurity 9 (CAS 1031-92-1), molecular formula C17H19ClN2HCl and molecular weight 323.26 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Hydroxyzine Impurity 9 (C17H19ClN2HCl) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 323.26 g/mol, it falls into the moderately-high-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 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.
Physical & Chemical Properties
| Molecular Formula | C17H19ClN2 2*HCl |
| Molecular Weight | 323.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Hydroxyzine Standards
- Hydroxyzine Pamoate (CAS 10246-75-0)
- Hydroxyzine-d8DISCONTINUED (CAS 1189480-47-4)
- Hydroxyzine-d4 2HCl (2-hydroxyethoxy-d4) (CAS 1219805-91-0)
- Hydroxyzine Impurity B Hydrochloride salt (CAS 1263283-80-2)
- Hydroxyzine-d8 DiHCl (CAS 1808202-93-8)
- Hydroxyzine dihydrochloride (CAS 2192-20-3)
- Hydroxyzine Impurity 5 (CAS 2469273-48-9)
- Hydroxyzine Impurity 2 Dimaleate (Etodroxizine Dimaleate) (CAS 56335-21-8)
Recommended Standards
- n-(1-Methyl-1h-pyrazol-4-yl)-2-(trifluoromethyl)benzamide (CAS 1241255-96-8)
- 5-oxo-1,2,3,5-tetrahydroindolizine-8-carboxylic acid (CAS 1516856-19-1)
- 3-Iodo-2-(4-methoxyphenyl)imidazo[1,2-a]pyrimidine (CAS 1426142-82-6)
- 4-Bromo-2,3,6-trifluoroanisole (CAS 13332-25-7)
- n-[1-(1-benzofuran-2-yl)ethyl]-2-chloropropanamide (CAS 1154010-39-5)
- 6,7-Dihydro-5H-pyrrolo[3,4-b]pyridin-2-amine (CAS 1375302-66-1)
- 5-Methyl-4-nitroisoxazole (CAS 1122-06-1)
- 1-(4-Methyl-3-oxo-3,4-dihydropyrazin-2-yl)azetidine-3-carboxylic acid (CAS 1341331-38-1)
- 1-(2-Phenylacetyl)-L-prolylglycine Ethyl Ester (CAS 157115-85-0)
- Semaglutide Impurity 180 (CAS CATO-C4X-2226180)
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