5-Methoxy-2-nitrobenzofuran CAS 30335-72-9
| CAS No. | 30335-72-9 |
| Molecular Formula | C9H7NO4 |
| Molecular Weight | 193.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-Methoxy-2-nitrobenzofuran 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.
5-Methoxy-2-nitrobenzofuran (CAS 30335-72-9), molecular formula C9H7NO4 and molecular weight 193.16 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 5-Methoxy-2-nitrobenzofuran is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 193.16 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.
Physical & Chemical Properties
| Molecular Formula | C9H7NO4 |
| Molecular Weight | 193.16 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Nitrogen Atoms | 1 |
Related Methoxy Standards
- 6-Methoxy-4-nitro-1H-indazole (CAS 1000341-08-1)
- 5-Methoxy-benzo[d]isoxazole-3-carboxylic acid (CAS 108805-39-6)
- 7-Methoxy-3-nitro-1H-pyrrolo[3,2-b]pyridine (CAS 1116136-57-2)
- 3-Methoxy-5-nitro-1H-indazole (CAS 1118574-49-4)
- 6-Methoxy-3-nitro-1H-pyrrolo[2,3-b]pyridine (CAS 1190310-33-8)
- 4-Methoxy-3-nitro-1H-pyrrolo[3,2-c]pyridine (CAS 1190314-09-0)
- 7-Methoxy-3-nitro-1H-pyrrolo[2,3-c]pyridine (CAS 1190314-26-1)
- 4-Methoxy-3-nitro-1H-pyrrolo[2,3-b]pyridine (CAS 1190314-57-8)
Recommended Standards
- 5-Methoxy-2-benzoxazolecarboxylic Acid (CAS 49559-68-4)
- 5-Methoxy-6-nitro-1H-indazole (CAS 724767-15-1)
- 5-Methoxy-1H-benzo[d][1,3]oxazine-2,4-dione (CAS 67765-42-8)
- 5-Methoxyisatoic Anhydride (CAS 37795-77-0)
- 4-Chloro-1-[(2,6-dichlorophenyl)methyl]-1h-pyrazol-3-amine (CAS 1004194-66-4)
- 1-(3-Azetidinyl)pyrazole Dihydrochloride (CAS 1221715-95-2)
- 3-Bromopropanoyl Bromide (CAS 7623-16-7)
- 3-(4,4-Difluorocyclohexyl)aniline (CAS 478403-44-0)
- (4,6-Dimethoxypyrimidin-5-yl)methanol (CAS 1182792-70-6)
- tert-butyl 6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)indoline-1-carboxylate (CAS 2246833-75-8)
- Ethyl 2-(aminomethyl)-5-methylthiazole-4-carboxylate dihydrochloride (CAS 2137695-98-6)
- 5-Amino-1-benzofuran-2-carboxamide hydrochloride (CAS 1171762-91-6)
- N-(5-Amino-2-methoxyphenyl)-2-(4-methoxyphenoxy)-acetamide (CAS 1020054-73-2)
- Endo-Ala35-Tirzepatide (CAS CATO-CPTD788687)
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