5-chloro-3-methyl-2-nitro-pyridine CAS 1211532-85-2
| CAS No. | 1211532-85-2 |
| Molecular Formula | C6H11ClN2O2 |
| Molecular Weight | 178.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-chloro-3-methyl-2-nitro-pyridine (CAS 1211532-85-2), molecular formula C6H11ClN2O2 and molecular weight 178.62 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C6H11ClN2O2, 5-chloro-3-methyl-2-nitro-pyridine contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 178.62 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C6H11ClN2O2 |
| Molecular Weight | 178.62 g/mol |
| 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 DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 6-Chloroisoquinolin-3-amine (CAS 1204701-64-3)
- 5-chloro-2-methyl-3-nitro-pyridine (CAS 1211533-93-5)
- 2-Chloro-6-cyclopropylpyridine-3-carbonitrile (CAS 1198475-35-2)
- 4-Chloro-2-methyl-1,8-naphthyridine (CAS 1221272-96-3)
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