2-Isobutyl-4-nitrophenol CAS 91012-83-8
| CAS No. | 91012-83-8 |
| Molecular Formula | C10H13NO3 |
| Molecular Weight | 195.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-Isobutyl-4-nitrophenol (CAS 91012-83-8), molecular formula C10H13NO3 and molecular weight 195.22 g/mol, is a CATO reference standard with documented purity and traceability.
2-Isobutyl-4-nitrophenol (C10H13NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
As a certified reference material (CRM), 2-Isobutyl-4-nitrophenol 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 | C10H13NO3 |
| Molecular Weight | 195.22 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Nitrogen Atoms | 1 |
Related Isobutyl Standards
- 6-Isobutyl-2-nitropyridin-3-amine (CAS 1876220-55-1)
- 1-Isobutyl-2-oxo-1,2-dihydropyridine-3-carboxylic acid (CAS 954225-48-0)
- 1-Isobutyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid (CAS 952511-66-9)
- 1-Isobutyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid (CAS 939411-30-0)
- Isobutyl pyrimidin-2-ylcarbamate (CAS 824933-16-6)
- N-isobutyl-3-nitropyridin-2-amine (CAS 942356-83-4)
- N-isobutyl-1,5-dimethyl-1H-pyrazole-3-carboxamide (CAS 1052633-74-5)
- 5-Isobutyl-3-(pyrrolidin-3-yl)-1,2,4-oxadiazole (CAS 1225218-64-3)
Recommended Standards
- 2-Isobutoxyisonicotinic acid (CAS 855636-36-1)
- 2-Isopropyl-5-methyl-4-nitrophenol (CAS 36778-56-0)
- 2-hydroxy-n-[(2s)-1-hydroxypropan-2-yl]benzamide (CAS 2084064-91-3)
- 2-Isopropylamino-5-methyl-3-nitropyridine (CAS 954228-54-7)
- n-(2-Chloro-4,5-dimethoxyphenyl)-2-methoxyacetamide (CAS 1119248-47-3)
- 1-tert-Butyl 3-methyl bicyclo[1.1.1]pentane-1,3-dicarboxylate (CAS 138732-31-7)
- 3-Methyl-4'-(pyrrolidin-1-ylsulfonyl)-[1,1'-biphenyl]-2-carboxylic acid (CAS 1262007-21-5)
- Tetryzoline Impurity 1 (CAS 23853-51-2)
- 1-[2-(Methylsulfonyl)-4-nitrophenyl]homopiperazine (CAS 951624-89-8)
- (s)-2-Amino-2-(perfluorophenyl)ethan-1-ol (CAS 155701-00-1)
- 1-((4-Carbamoylphenyl)amino)-1-oxopropan-2-yl 3-phenylpropanoate (CAS 930699-88-0)
- 2-(p-Tolyl)-1,3,6,2-dioxazaborocane (CAS 5123-18-2)
- Isopropyl 2-amino-5-carbamoyl-4-methylthiophene-3-carboxylate (CAS 350988-33-9)
- Peptide Impurity 13 (CAS CATO-CPTD788813)
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