2,5-dimethyl-4-nitropyridine 1-oxide CAS 21816-42-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 21816-42-2 |
| Molecular Formula | C7H8N2O3 |
| Molecular Weight | 168.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,5-dimethyl-4-nitropyridine 1-oxide (CAS 21816-42-2) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C7H8N2O3. Molecular weight: 168.15 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C7H8N2O3 |
| Molecular Weight | 168.15 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.) | 1963 |
| Nitrogen Atoms | 2 |
Related dimethyl Standards
- 2,6-Dimethyl-3-nitropyridin-4(1H)-one (CAS 122957-45-3)
- 1,2-Dimethyl-6-oxo-1,6-dihydropyrimidine-5-carboxylic acid (CAS 1272507-96-6)
- 2,6-Dimethyl-3-nitropyridin-4-ol (CAS 13603-45-7)
- 1,4-Dimethyl-3-nitropyridin-2(1H)-one (CAS 1710703-39-1)
- 3,5-Dimethyl-4-oxo-4H-pyran-2-carboxylic acid (CAS 187222-12-4)
- 1,2-Dimethyl-6-oxo-1,6-dihydropyrimidine-4-carboxylic acid (CAS 2330941-64-3)
- 1,3-Dimethyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carbaldehyde (CAS 83174-90-7)
- 1,3-Dimethyl-5-nitropyridin-2(1H)-one (CAS 202278-26-0)
Recommended Standards
- 2,5-Dimethoxycyclohexa-2,5-diene-1,4-dione (CAS 3117-03-1)
- 2,6-Dihydroxy-4-methylbenzoic acid (CAS 480-67-1)
- 2,5-Dihydroxy-4-methoxybenzaldehyde (CAS 29865-97-2)
- 4-Ethynyl-3,5-difluoropyridine (CAS 1824403-41-9)
- Methyl ethylcarbamate (CAS 6135-31-5)
- 1-tert-butoxycarbonyl-3,3-dimethyl-1,3-azasilolidine-5-carboxylic acid (CAS 1822551-68-7)
- 4,4-Dimethylcyclopentane-1,2-diol (CAS 66606-40-4)
- ((3S,4R)-1-Benzyl-4-phenylpyrrolidin-3-yl)methanol (CAS 221141-89-5)
- Talazoparib Impurity 1 (CAS CATO-C4X-33731)
- Semaglutide impurity 29 (CAS 1188328-22-4)
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 13829788188 / jacky.chen@cato-chem.com