3-Chloro-4-cyanopicolinic acid CAS 1805153-36-9
| CAS No. | 1805153-36-9 |
| Molecular Formula | C7H3ClN2O2 |
| Molecular Weight | 182.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-Chloro-4-cyanopicolinic acid (CAS 1805153-36-9) is a high-purity analytical reference standard with the molecular formula C7H3ClN2O2 and a molecular weight of 182.56 g/mol.
3-Chloro-4-cyanopicolinic acid (C7H3ClN2O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 3-Chloro-4-cyanopicolinic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H3ClN2O2 |
| Molecular Weight | 182.56 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 sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 6-Chloro-4-cyanopicolinic acid (CAS 1060809-92-8)
- 4-Chloro-6-cyanopicolinic acid (CAS 1060812-13-6)
- 2-Chloro-6-cyanoisonicotinic acid (CAS 1060812-14-7)
- 2-Chloro-5-cyanonicotinic acid (CAS 1089335-56-7)
- 3-Chloro-5-cyanopicolinic acid3-chloro-5-cyanopicolinic acid (CAS 1200497-81-9)
- 6-Chloro-5-cyanonicotinic Acid (CAS 1206969-20-1)
- 5-Chloro-6-cyanonicotinic Acid (CAS 1211589-19-3)
- 6-Chloro-3-cyanopicolinic acid (CAS 1256786-84-1)
Recommended Standards
- 2-Chloro-5-nitrobenzonitrile (CAS 16588-02-6)
- 4-Chloro-6-cyanonicotinic Acid (CAS 1805651-53-9)
- 2-Chloro-5-cyanoisonicotinic acid (CAS 1638361-41-7)
- 2-Chloro-3-cyanoisonicotinic acid (CAS 1807049-85-9)
- 1-[(6-bromonaphthalen-2-yl)oxy]propan-2-one (CAS 173301-08-1)
- 2-((Tert-butoxycarbonyl)(methyl)amino)-2-(4-methoxyphenyl)acetic acid (CAS 1404879-70-4)
- 3-Bromo-2-nitrobenzenesulphonamide (CAS 1261521-33-8)
- Ipconazole Impurity 2 (CAS 115937-89-8)
- n-Amino-4-chloropyridine-2-carboximidamide (CAS 1192456-28-2)
- 3,5-dimethoxypyrazine-2-carbaldehyde (CAS 136866-38-1)
- Ethyl 4-(trifluoromethyl)-1,3-oxazole-5-carboxylate (CAS 1126633-32-6)
- n-Isopropyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidin-2-amine (CAS 1218791-46-8)
- Prednisolone Impurity 30 (CAS 3517-48-4)
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