2-Methoxy-4-methyl-5-nitrobenzoic acid CAS 90763-12-5
| CAS No. | 90763-12-5 |
| Molecular Formula | C9H9NO5 |
| Molecular Weight | 211.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2-Methoxy-4-methyl-5-nitrobenzoic acid (CAS 90763-12-5), a certified reference material (molecular formula C9H9NO5, MW 211.17 g/mol) for analytical method development and quality control.
Based on its molecular formula C9H9NO5, 2-Methoxy-4-methyl-5-nitrobenzoic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 211.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), 2-Methoxy-4-methyl-5-nitrobenzoic acid 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 | C9H9NO5 |
| Molecular Weight | 211.17 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 methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 1 |
Related Methoxy Standards
- 3-Methoxy-4-methyl-5-nitrobenzoic acid (CAS 1002110-78-2)
- 2-Methoxy-6-(methoxycarbonyl)isonicotinic acid (CAS 1373960-20-3)
- 5-Methoxy-2-methyl-4-nitrobenzoic acid (CAS 1401423-31-1)
- Methyl 4-methoxy-2-nitrobenzoate (CAS 181871-73-8)
- (2-Methoxy-5-nitrophenyl)acetic acid (CAS 51073-04-2)
- 2-(3-Methoxy-2-nitrophenyl)acetic Acid (CAS 20876-31-7)
- 2-(3-Methoxy-4-nitrophenyl)acetic Acid (CAS 5803-22-5)
- 2-(4-Methoxy-2-nitrophenyl)acetic acid (CAS 20876-30-6)
Recommended Standards
- 2-Hydroxy-2-(4-nitrophenyl)propanoic acid (CAS 81168-94-7)
- 2-Methoxy-4-nitro-benzoic acid hydrazide (CAS 857599-45-2)
- 2-Ethoxy-5-nitrobenzoic acid (CAS 57148-23-9)
- 2-Methoxy-4-nitrophenyl acetate (CAS 67851-29-0)
- tert-Butyl 3-((methylamino)methyl)morpholine-4-carboxylate (CAS 475106-41-3)
- n-(2,5-Dichlorophenyl)-2-(ethylamino)acetamide hydrochloride (CAS 1049754-40-6)
- Indole-3-glyoxylamide (CAS 5548-10-7)
- 6-Bromo-5-fluoro-1h-indole-3-carbaldehyde (CAS 1227496-42-5)
- 4-[4-(aminomethyl)phenyl]piperazin-2-one (CAS 1019575-67-7)
- 4-((4-Bromo-2-fluorophenyl)sulfonyl)morpholine (CAS 1000068-42-7)
- 6-(Trifluoromethoxy)quinazolin-4(3H)-one (CAS 179246-09-4)
- 2-Amino-4-(2-methoxyphenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile (CAS 164410-71-3)
- N-Eicosane (CAS 112-95-8)
- Semaglutide Impurity 190 (CAS CATO-C4X-2226190)
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