4-Ethyl-2-methylaniline hydrochloride CAS 1201943-82-9
| CAS No. | 1201943-82-9 |
| Molecular Formula | C9H13N |
| 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-Ethyl-2-methylaniline hydrochloride.
4-Ethyl-2-methylaniline hydrochloride (CAS 1201943-82-9), molecular formula C9H13NHCl and molecular weight 171.67 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, chlorine substitution, 4-Ethyl-2-methylaniline hydrochloride is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 171.67 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.
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.
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 | C9H13N HCl |
| Molecular Weight | 171.67 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
- N-Methylaniline (CAS 100-61-8)
- 3-Ethyl-4-methylaniline (CAS 104715-64-2)
- 2-Ethyl-3-methylaniline (CAS 111923-32-1)
- 3-Ethyl-2-methylaniline hydrochloride (CAS 1201943-76-1)
- 2-Ethyl-6-methylaniline-d13 (CAS 1219794-93-0)
- 4-Ethyl-3-methylaniline hydrochloride (CAS 1427379-96-1)
- 5-Ethyl-2-methylaniline (CAS 17070-96-1)
- 2-Ethyl-4-methylaniline (CAS 24544-07-8)
Recommended Standards
- 5-Bromo-6-chloro-2-(methylthio)pyrimidin-4(3H)-one (CAS 1935150-38-1)
- 12-amino-8$l^{6}-thia-2,3,5,7-tetraazatricyclo[7.4.0.0^{2,6}]trideca-1(9),3,5,10,12-pentaene-8,8-dione (CAS 1354951-25-9)
- 4-Bromo-N-cyclohexyl-1h-pyrrole-2-carboxamide (CAS 940755-00-0)
- 2-pyrrolidin-2-yl-1,3-thiazole (CAS 524674-17-7)
- 4-((5-((4-(3-Chlorophenyl)-3-oxopiperazin-1-yl)methyl)-1H-imidazol-1-yl)methyl)benzonitrile (CAS 183499-57-2)
- 6-(Cyclohexylamino)pyridine-3-carbonitrile (CAS 864266-46-6)
- 5-Fluoro-1H-indazole-7-carboxylic acid (CAS 1038916-13-0)
- 3-(3,4-Dihydro-2H-benzo[b][1,4]dioxepin-7-yl)-1H-pyrazole (CAS 1019007-48-7)
- 2-(2-Methoxyphenyl)pyrrole (CAS 69640-32-0)
- Casein Kinase II Receptor Peptide (CAS 198481-81-1)
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