1-Nitro-2-naphthoic acid CAS 103987-83-3
| CAS No. | 103987-83-3 |
| Molecular Formula | C11H7NO4 |
| Molecular Weight | 217.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1-Nitro-2-naphthoic 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.
1-Nitro-2-naphthoic acid (CAS 103987-83-3) is a high-purity analytical reference standard with the molecular formula C11H7NO4 and a molecular weight of 217.18 g/mol.
1-Nitro-2-naphthoic acid (C11H7NO4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
Physical & Chemical Properties
| Molecular Formula | C11H7NO4 |
| Molecular Weight | 217.18 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 1 |
Related Nitro Standards
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- 4-Nitro-[2,2'-bipyridine] 1-oxide (CAS 14163-00-9)
- 4-Nitro-1-naphthoic acid (CAS 1975-43-5)
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Recommended Standards
- 2-Carbamoyl-3-hydroxy-1,4-naphthoquinone (CAS 103646-20-4)
- 6-(4-Nitrophenyl)pyridazin-3-ol (CAS 105537-49-3)
- 1-(3-Nitrophenyl)-1h-pyrazole-4-carbaldehyde (CAS 101872-31-5)
- 5-(3-Nitrophenyl)pyrimidin-2-ol (CAS 1111103-79-7)
- 2-Methyl-1H-benzo[d]imidazole-5-carbonitrile (CAS 92443-13-5)
- Methyl 3-(3-chloro-4-cyanophenyl)benzoate (CAS 1355247-44-7)
- N-(4-Bromophenyl)-2-chloroacetamide (CAS 2564-02-5)
- 6-Ethoxy-2-methylquinolin-4(1H)-one (CAS 15644-91-4)
- N-(3-chloro-4-fluorophenyl)benzenesulfonamide (CAS 214956-16-8)
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- 3-Hydroxy-2,3-dimethylbutan-2-yl hydrogen (4-(1H-imidazol-1-yl)furan-2-yl)boronate (CAS 2223050-07-3)
- 2-Amino-N-(4-bromobenzyl)-N-isopropylacetamide (CAS 1181803-05-3)
- 4-Chloro-6-methoxy-2-phenylpyrimidine (CAS 4319-72-6)
- Semaglutide Impurity 138 (CAS CATO-C4X-2226138)
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