N-Ethyl-4-methyl-2-nitroaniline CAS 37637-58-4
| CAS No. | 37637-58-4 |
| Molecular Formula | C9H12N2O2 |
| Molecular Weight | 180.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies N-Ethyl-4-methyl-2-nitroaniline (CAS 37637-58-4), a certified reference material (molecular formula C9H12N2O2, MW 180.20 g/mol) for analytical method development and quality control.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, N-Ethyl-4-methyl-2-nitroaniline is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 180.20 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), N-Ethyl-4-methyl-2-nitroaniline 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 | C9H12N2O2 |
| Molecular Weight | 180.20 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Nitrogen Atoms | 2 |
Recommended Standards
- n-Ethyl-2-methyl-4-nitroaniline (CAS 88374-25-8)
- N-ethyl-5-methyl-2-nitroaniline (CAS 502178-78-1)
- N-cyclopropyl-3,5-dimethylisoxazole-4-carboxamide (CAS 925615-76-5)
- N-Ethyl-N-methyl-4-nitroaniline (CAS 56269-48-8)
- 2-(5-(4-Ethoxyphenyl)-1,3,4-thiadiazol-2-yl)ethanamine (CAS 917749-65-6)
- 7-Methylquinolin-4(1H)-one (CAS 93919-55-2)
- 17alphalpha-(3-Hydroxypropyl)-6beta,7beta,15beta,16beta-dimethylenandrost-4-en-17beta-ol-3-one (CAS 69651-50-9)
- N-Methyl-4-(piperazin-1-yl)benzamide dihydrochloride (CAS 1782115-23-4)
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- 4-(Bicyclo[1.1.1]pentan-1-yl)-3-oxobutanenitrile (CAS 2737246-36-3)
- Semaglutide impurity 46 (CAS CATO-C4X-222646)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com