5-Chloro-2,3-dimethoxypyridine CAS 284040-73-9
| CAS No. | 284040-73-9 |
| Molecular Formula | C7H8ClNO2 |
| Molecular Weight | 173.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 5-Chloro-2,3-dimethoxypyridine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 173.60 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
5-Chloro-2,3-dimethoxypyridine (CAS 284040-73-9), molecular formula C7H8ClNO2 and molecular weight 173.60 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C7H8ClNO2 |
| Molecular Weight | 173.60 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 2-Chloro-3,4-dimethoxypyridine (CAS 101664-59-9)
- 3-Chloro-4-methoxy-2-methylpyridine 1-oxide (CAS 108004-81-5)
- 5-Chloro-4-methoxy-2-methylpyridine 1-oxide (CAS 108004-85-9)
- 2-chloro-4,6-dimethoxypyridine (CAS 108279-89-6)
- 5-Chloro-2-methyl-6-(methylamino)pyrimidin-4(3H)-one (CAS 1135283-07-6)
- 2-(4-Chloro-5-methyl-1H-pyrazol-1-yl)acetamide (CAS 1172368-04-5)
- Methyl 4-chloro-1-methyl-1H-pyrrole-2-carboxylate (CAS 119866-61-4)
- 2-(4-Chloro-1H-pyrazol-1-yl)propanamide (CAS 1205841-05-9)
Recommended Standards
- 5-Chloro-1,3-dimethyl-1H-pyrazole-4-carboxamide (CAS 204251-18-3)
- 5-Chloro-2-ethoxypyridin-4-ol (CAS 856965-85-0)
- 4-Chloro-6-methoxy-N-methylpyrimidin-2-amine (CAS 98134-38-4)
- 5-Chloro-2-methoxy-6-methylpyrimidin-4-amine (CAS 932701-79-6)
- 1-(3-Aminoazetidin-1-yl)-2-(1H-tetrazol-1-yl)ethan-1-one (CAS 1489071-59-1)
- 2,2-difluoro-2-{1H,4H,6H,7H-pyrano[4,3-c]pyrazol-3-yl}ethan-1-amine (CAS 1803589-74-3)
- 3-((tert-Butoxycarbonyl)(methyl)amino)-1-methyl-1H-pyrazole-5-carboxylic acid (CAS 1692905-99-9)
- Tributyl(4-chloro-3-methylphenoxy)stannane (CAS 15741-98-7)
- 4-(5-(3,4-Dimethoxybenzylidene)-4-oxo-2-thioxothiazolidin-3-yl)butanoic acid (CAS 18623-44-4)
- (S)-N-(1-(2-Hydroxyethyl)pyrrolidin-3-yl)-N-methylacetamide (CAS 1354008-70-0)
- 2-(4-Chlorophenyl)-1-[(4-methylphenyl)methanesulfonyl]propan-2-ol (CAS 338412-41-2)
- 1-(4-Chlorobenzyl)piperidin-3-amine dihydrochloride (CAS 226249-99-6)
- 4-(Indolin-1-yl)butan-2-ol (CAS 56771-63-2)
- Semaglutide impurity 66 (CAS CATO-C4X-222666)
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