2-Methyl-5-nitropyridine CAS 21203-68-9
| CAS No. | 21203-68-9 |
| Molecular Formula | C6H6N2O2 |
| Molecular Weight | 138.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Methyl-5-nitropyridine (CAS 21203-68-9), molecular formula C6H6N2O2 and molecular weight 138.12 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-Methyl-5-nitropyridine (C6H6N2O2) 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 138.12 g/mol, it falls into the low-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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 2-Methyl-5-nitropyridine 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 | C6H6N2O2 |
| Molecular Weight | 138.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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 Methyl Standards
- 5-Methyl-2-nitropyridine (CAS 1074-38-0)
- 2-Methyl-4-nitropyridine (CAS 13508-96-8)
- 1678-53-1 3-methyl-4-nitropyridine hydrochloride 4-Nitro-3-picoline hydrochloride (CAS 1678-53-1)
- 2-Methyl-6-nitropyridine (CAS 18368-61-1)
- 4-Methyl-2-nitropyridine (CAS 18368-71-3)
- 3-Methyl-2-nitropyridine (CAS 18368-73-5)
- 2-Methyl-3-nitropyridine (CAS 18699-87-1)
- 3-Methyl-5-nitropyridine (CAS 6960-20-9)
Recommended Standards
- 2-Methoxy-5-pyrimidinecarbaldehyde (CAS 90905-32-1)
- 2-Propenoic acid, 3-(2-furanyl)-, (Z)- (CAS 25129-65-1)
- 2-Hydroxynicotinamide (CAS 94083-12-2)
- 2-Pyrimidineacetic Acid (CAS 66621-73-6)
- 2-Bromo-5-(trifluoromethyl)benzoyl chloride (CAS 944836-48-0)
- 2-(4-Chlorophenyl)-N-(2,4-difluorophenyl)-1,3-thiazole-4-carboxamide (CAS 303997-96-8)
- 2,6-Difluoro-N-methylbenzamide (CAS 22265-59-4)
- N-(Quinolin-8-yl)formamide (CAS 62937-22-8)
- 2,3,4,7,8-Pentabromodibenzofuran (CAS 131166-92-2)
- 3-Hydroxy-2,3-dimethylbutan-2-yl hydrogen (2-(ethyl(methyl)amino)pyridin-4-yl)boronate (CAS 1421325-47-4)
- 2-Bromo-5-chloro-[1,2,4]triazolo[1,5-a]pyrazine (CAS 1935050-83-1)
- Disperse Yellow 39 (CAS 12236-29-2)
- Diethyl (acetyloxy)malonate (CAS 5468-23-5)
- Des-Trp25-Tirzepatide (CAS CATO-CPTD788948)
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