3-Chloro-2,4-dimethoxypyridine CAS 405141-77-7
| CAS No. | 405141-77-7 |
| Molecular Formula | C7H8ClNO2 |
| Molecular Weight | 173.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Chloro-2,4-dimethoxypyridine.
3-Chloro-2,4-dimethoxypyridine (CAS 405141-77-7), molecular formula C7H8ClNO2 and molecular weight 173.60 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 3-Chloro-2,4-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 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.
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
- 3-Chloro-1-methyl-6-(methylamino)pyridazin-4(1H)-one (CAS 41217-92-9)
- 3-Chloro-2-ethoxypyridin-4-ol (CAS 2056110-43-9)
- 3-Amino-2-chloro-6-methoxyphenol (CAS 526217-43-6)
- 3-Chloro-2-methoxy-5-methylpyridin-4-ol (CAS 2685800-20-6)
- 1-(4-Fluorophenyl)quinazolin-4(1H)-one (CAS 64843-99-8)
- 5-Isopropyl-1,3-dihydro-2H-indol-2-one (CAS 156232-25-6)
- 2-(5-(2,5-Dichlorophenyl)-1,3,4-oxadiazol-2-yl)benzoic acid (CAS 59663-68-2)
- N-Benzyl-2-(4-bromophenyl)-2H-tetrazole-5-carboxamide (CAS 1396676-97-3)
- 4-Methyl-N-(2-methylcyclopentyl)aniline (CAS 1135867-83-2)
- 1-(3-Bromophenyl)-1,3-dihydro-2H-imidazol-2-one (CAS 944709-54-0)
- (4-Methyl-6-(pyrrolidin-1-yl)pyridin-3-yl)methanol (CAS 1355219-54-3)
- 1,1,1,2-Tetrafluoro-2-(trifluoromethyl)-6-iodohexane 4687AF 99324-97-7 C7H8F7I (CAS 99324-97-7)
- 4-[2-(carbamoylamino)ethyl]benzoic acid (CAS 1153787-68-8)
- Tau Peptide (45-73) (Exon 2/Insert 1 Domain) trifluoroacetate salt (CAS 2022956-54-1)
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