5-Methoxy-2-nitropyridine CAS 126739-64-8
| CAS No. | 126739-64-8 |
| Molecular Formula | C6H6N2O3 |
| Molecular Weight | 154.12 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 5-Methoxy-2-nitropyridine.
CATO supplies 5-Methoxy-2-nitropyridine (CAS 126739-64-8), a certified reference material (molecular formula C6H6N2O3, MW 154.12 g/mol) for analytical method development and quality control.
Structurally, 5-Methoxy-2-nitropyridine (C6H6N2O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 154.12 g/mol, it falls into the medium-molecular-weight range. 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).
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.
As a certified reference material (CRM), 5-Methoxy-2-nitropyridine 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 | C6H6N2O3 |
| Molecular Weight | 154.12 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 2 |
Related Methoxy Standards
- 4-Methoxy-2-nitropyridine (CAS 1033203-56-3)
- 2-Methoxy-6-nitropyridine (CAS 1246566-53-9)
- 5-Methoxy-pyrimidine-4-carboxylic acid (CAS 1246632-76-7)
- 3-Methoxy-5-nitropyridine (CAS 128203-37-2)
- 2-Methoxy-4-nitropyridine (CAS 18614-54-5)
- 2-Methoxy-3-nitropyridine (CAS 20265-35-4)
- 2-Methoxy-5-nitropyridine (CAS 5446-92-4)
- 3-Methoxy-2-nitropyridine (CAS 20265-37-6)
Recommended Standards
- 2-Amino-3,5-difluorobenzonitrile (CAS 126674-94-0)
- 4-formyl-1-methyl-1H-pyrazole-3-carboxylic acid (CAS 1267443-23-1)
- n-(3,4-Difluorophenyl)cyanamide (CAS 1251343-38-0)
- 2-(4-Formyl-1H-pyrazol-1-yl)acetic acid (CAS 1273318-62-9)
- (S)-7-bromo-6-fluorochroman-4-ol (CAS 1567918-90-4)
- 1,2-Dimethyl-[1,2,4]triazolo[1,5-b]isoquinolin-5(1H)-one (CAS 52997-85-0)
- 2-Hydrazinyl-5-(piperidine-1-sulfonyl)pyridine (CAS 627839-89-8)
- tert-Butyl(2,5-dichlorophenoxy)dimethylsilane (CAS 188645-79-6)
- 3-(3-Chloro-phenylsulfamoyl)-4-methyl-benzoic acid (CAS 438021-88-6)
- (S)-6-Fluoro-1,2,3,4-tetrahydro-naphthalen-2-ylamine (CAS 782427-32-1)
- 6-Bromo-7-methyl-3-nitroimidazo[1,2-a]pyridine (CAS 1072944-64-9)
- (E)-3-(1,3-benzodioxol-5-yl)-2-(2-thienyl)-2-propenenitrile (CAS 1002342-12-2)
- 2-(3-Fluoro-4-methoxy-5-(trifluoromethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2121513-13-9)
- Semaglutide Main Chain P29 (CAS 1169630-82-3)
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