4-Methoxy-3-methylpyridine 1-oxide CAS 26883-29-4
| CAS No. | 26883-29-4 |
| Molecular Formula | C7H9NO2 |
| Molecular Weight | 139.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 4-Methoxy-3-methylpyridine 1-oxide (C7H9NO2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
4-Methoxy-3-methylpyridine 1-oxide (CAS 26883-29-4), molecular formula C7H9NO2 and molecular weight 139.15 g/mol, is a CATO reference standard with documented purity and traceability.
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), 4-Methoxy-3-methylpyridine 1-oxide 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 | C7H9NO2 |
| Molecular Weight | 139.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 1 |
Related Methoxy Standards
- 4-Methoxy-6-methyl-3-pyridinol (CAS 102074-64-6)
- 2-Methoxy-3-methyl-pyridin-5-ol (CAS 1216253-16-5)
- 5-Methoxy-6-methylpyridin-3-ol (CAS 1256793-06-2)
- 5-Methoxy-2-methylpyridin-3-ol (CAS 1256794-03-2)
- 5-Methoxy-2-pyridinemethanol (CAS 127978-70-5)
- 2-Methoxy-3-methylpyridine 1-oxide (CAS 19230-60-5)
- (3-methoxy-2-pyridyl)methanol (CAS 51984-46-4)
- 1-(3-Methoxy-1H-pyrrol-2-yl)ethanone (CAS 70718-05-7)
Recommended Standards
- 4-Hydroxy-5,6-dimethyl-2(1H)-pyridinone (CAS 84953-72-0)
- 4-Methoxy-5-methylpyridin-2(1H)-one (CAS 52545-14-9)
- 4-Hydroxy-3,6-dimethyl-1,2-dihydropyridin-2-one (CAS 4664-13-5)
- 5-(1-Hydroxyethyl)pyridin-2(1H)-one (CAS 4319-53-3)
- 2-chloro-2-cyclohexylacetonitrile (CAS 29770-68-1)
- 2-(3-(Trifluoromethyl)phenyl)pyridine (CAS 5957-84-6)
- 2-(2-Methoxy-[1,1'-biphenyl]-3-yl)-1-phenylethanol (CAS 1385020-84-7)
- 2-Butenedioic acid (2Z)-, 1-methyl ester, polymer with butyl 2-propenoate and ethenyl acetate, ammonium sodium salt (CAS 71808-72-5)
- 1-(3-Chloro-4-methoxyphenyl)-2-(methylthio)ethan-1-one (CAS 1179606-58-6)
- Methyl 4-methyl-3-ureidothiophene-2-carboxylate (CAS 955979-03-0)
- 2-Chloro-N-(oxolan-2-ylmethyl)acetamide (CAS 39089-62-8)
- 1-(2,2,2-Trichloroacetyl)pyrazolidin-3-one (CAS 303994-71-0)
- 4-Nitrophenethyl acetate (CAS 104-30-3)
- (Des-Bromo)-Neuropeptide B (1-23) (human) (CAS 434897-64-0)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com