4-Methyl-2,3-dinitrophenol CAS 68191-07-1
| CAS No. | 68191-07-1 |
| Molecular Formula | C7H6N2O5 |
| Molecular Weight | 198.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 4-Methyl-2,3-dinitrophenol (C7H6N2O5) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
4-Methyl-2,3-dinitrophenol (CAS 68191-07-1) is a high-purity analytical reference standard with the molecular formula C7H6N2O5 and a molecular weight of 198.13 g/mol.
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 | C7H6N2O5 |
| Molecular Weight | 198.13 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, water |
| 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.) | 1976 |
| Nitrogen Atoms | 2 |
Related Methyl Standards
- 3-Methyl-2,4-dinitrophenol (CAS 1817-66-9)
- 4-Methyl-2,5-dinitrophenol (CAS 20294-52-4)
- 4-Methyl-3,5-dinitrophenol (CAS 63989-82-2)
- 2-Methyl-4,6-dinitrophenol (CAS 534-52-1)
- 2,4-Dinitrophenol-d3 (CAS 93951-77-0)
- 2,3-Dinitrophenol (CAS 66-56-8)
- 2,5-Dinitrophenol (Wetted with water >20%) (CAS 329-71-5)
- 3,5-Dinitrophenol (CAS 586-11-8)
Recommended Standards
- 4-Methoxy-5-nitronicotinic acid (CAS 2089326-23-6)
- 4,6-Dihydroxyisophthalic Acid (CAS 19829-74-4)
- 4,6-Difluoro-1H-indazole-3-carboxylic acid (CAS 885523-11-5)
- 4-Nitro-2-(nitromethyl)phenol (CAS 36363-18-5)
- 1H-Benzo[4,5]imidazo[2,1-c][1,2,4]triazol-3-ol (CAS 116577-81-2)
- (R)-3-((2,6-Dichlorobenzyl)oxy)pyrrolidine hydrochloride (CAS 1289584-89-9)
- 4-(2-(4-Methoxyphenyl)oxazol-5-yl)aniline (CAS 89752-96-5)
- 1-(2-Nitrobenzyl)pyrrolidine (CAS 55581-63-0)
- 2-Amino-2-(2-ethoxyphenyl)-3,3,3-trifluoropropanoic acid (CAS 1411612-54-8)
- 1-(5-Methyl-1,2,4-oxadiazol-3-yl)propan-1-amine hydrochloride (CAS 111997-68-3)
- N-(4-Formylpyridin-3-yl)acetamide (CAS 1124194-63-3)
- 4-(Benzoylamino)-2-hydroxybenzoic acid (CAS 13898-58-3)
- N-(2-methylnaphthalen-1-yl)thiophene-2-sulfonamide (CAS 860610-50-0)
- Semaglutide Impurity 21(HO-Ste-L-γGlu-AEEA-AEEA-OH) (CAS 1335440-44-2)
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