2-Chloro-3-methylisonicotinaldehyde CAS 790696-96-7
| CAS No. | 790696-96-7 |
| Molecular Formula | C7H6ClNO |
| Molecular Weight | 155.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2-Chloro-3-methylisonicotinaldehyde is closely related to an amide group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2-Chloro-3-methylisonicotinaldehyde (CAS 790696-96-7) is a high-purity analytical reference standard with the molecular formula C7H6ClNO and a molecular weight of 155.58 g/mol.
Owing to an amide group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 2-Chloro-3-methylisonicotinaldehyde is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 155.58 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C7H6ClNO |
| Molecular Weight | 155.58 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 |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 3-(4-Chloro-1h-pyrazol-1-yl)propanenitrile (CAS 1001500-05-5)
- 4-Chloro-5-methylpicolinaldehyde (CAS 1060801-47-9)
- 2-Chloro-5-methylisonicotinaldehyde (CAS 1060801-49-1)
- 4-Chloro-5-methylnicotinaldehyde (CAS 1060801-51-5)
- 6-Chloro-4-methylpicolinaldehyde (CAS 1060804-70-7)
- 4-Chloro-6-methylnicotinaldehyde (CAS 1060805-86-8)
- 4-Chloro-2-methylnicotinaldehyde (CAS 1060805-88-0)
- 3-Chloro-6-methylpicolinaldehyde (CAS 1060810-01-6)
Recommended Standards
- 2-Chloro-3-formyl-4-picoline (CAS 884495-45-8)
- 2-Chloro-5-(oxiran-2-yl)pyridine (CAS 288392-34-7)
- 2-Chloro-1-(pyridin-3-yl)ethan-1-one (CAS 55484-11-2)
- 2-Chloro-5-methylnicotinaldehyde (CAS 92444-99-0)
- (R)-3,3'-Diphenyl-1,1'-binaphthyl-2,2'-diamine (CAS 906373-48-6)
- 2-tert-Butyl 1-methyl 3-chloro-5-(trifluoromethyl)phthalate (CAS 1956365-76-6)
- 6-Methoxynaphthalene-2-carbothioamide (CAS 926234-18-6)
- 3-(2-(4-Hydroxypiperidin-1-yl)ethoxy)benzonitrile (CAS 1095091-01-2)
- 4-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)oxy)-N-(4-(trifluoromethoxy)phenyl)benzenesulfonamide (CAS 338775-27-2)
- [2-(but-3-en-1-yloxy)phenyl]boronic acid (CAS 1334402-83-3)
- 3-Cyclobutyl-1,2,4-oxadiazole-5-carbaldehyde (CAS 1492748-82-9)
- 2-[Benzyl(methyl)amino]-1,3-thiazole-5-carbaldehyde (CAS 866149-82-8)
- Phenyltrifluorosilane (CAS 368-47-8)
- Semaglutide impurity 331 (CAS CATO-C4X-2226231)
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