4-(Difluoromethoxy)-5-methoxy-2-nitrobenzoic acid CAS 923170-53-0
| CAS No. | 923170-53-0 |
| Molecular Formula | C9H7F2NO6 |
| Molecular Weight | 263.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-(Difluoromethoxy)-5-methoxy-2-nitrobenzoic acid.
4-(Difluoromethoxy)-5-methoxy-2-nitrobenzoic acid (CAS 923170-53-0) is a high-purity analytical reference standard with the molecular formula C9H7F2NO6 and a molecular weight of 263.15 g/mol.
Based on its molecular formula C9H7F2NO6, 4-(Difluoromethoxy)-5-methoxy-2-nitrobenzoic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 263.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
CATO manufactures 4-(Difluoromethoxy)-5-methoxy-2-nitrobenzoic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H7F2NO6 |
| Molecular Weight | 263.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Difluoromethoxy Standards
- (2-(Difluoromethoxy)-3-methylphenyl)(pyridin-4-yl)methanone (CAS 1261458-89-2)
- (2-(Difluoromethoxy)-6-methylphenyl)(pyridin-4-yl)methanone (CAS 1261468-28-3)
- 2-(5-(Difluoromethoxy)-2-methylbenzoyl)pyridine (CAS 1261658-40-5)
- (3-(Difluoromethoxy)-4-methylphenyl)(pyridin-4-yl)methanone (CAS 1261660-85-8)
- 2-(3-(Difluoromethoxy)-2-methylbenzoyl)pyridine (CAS 1261678-15-2)
- 2-(2-(Difluoromethoxy)-5-methylbenzoyl)pyridine (CAS 1261799-43-2)
- alpha-[4-(Difluoromethoxy)phenyl]benzeneethanamine (CAS 1184261-49-1)
- 1-[4-(Difluoromethoxy)phenyl]-2-phenylethanone (CAS 83882-61-5)
Recommended Standards
- 3-Bromodibenzothiophene (CAS 97511-04-1)
- 4-Bromodibenzothiophene (CAS 97511-05-2)
- 2-Bromo-N-(tert-butyl)thiazole-5-carboxamide (CAS 62435-94-3)
- 5,7-Bis(difluoromethyl)pyrazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 438227-84-0)
- 2-(2-Bromo-5-fluoro-4-(trifluoromethyl)phenyl)acetonitrile (CAS 2091737-50-5)
- Cyclopropyl(4-methylthiazol-2-yl)methanol (CAS 1047663-31-9)
- 2-(3,4-Dihydro-2h-1,5-benzodioxepin-7-yl)acetic acid (CAS 127264-07-7)
- 5-Ethoxy-6-methoxy-2,3-dihydro-1H-inden-1-one (CAS 91496-80-9)
- 5-(2-Fluorophenyl)-1,2-dihydro-3h-1,2,4-triazol-3-imine (CAS 313662-92-9)
- (E)-N-(o-Tolyl)-3-(3-(trifluoromethyl)phenyl)acrylamide (CAS 1164539-05-2)
- 3-(Benzo[d]thiazole-2-carboxamido)propanoic acid (CAS 261505-45-7)
- tert-Butyl (4-guanidinobutyl)carbamate (CAS 99733-14-9)
- 2-(4-Fluorobenzamido)-3-(1H-indol-3-yl)propanoic acid (CAS 39545-02-3)
- Semaglutide impurity 270 (CAS CATO-C4X-2226270)
Why CATO?
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