4-Chloro-2,6-pyridinedicarboxylic Acid CAS 4722-94-5
| CAS No. | 4722-94-5 |
| Molecular Formula | C7H4ClNO4 |
| Molecular Weight | 201.56 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.
4-Chloro-2,6-pyridinedicarboxylic Acid (CAS 4722-94-5) is a high-purity analytical reference standard with the molecular formula C7H4ClNO4 and a molecular weight of 201.56 g/mol.
Based on its molecular formula C7H4ClNO4, 4-Chloro-2,6-pyridinedicarboxylic Acid contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 201.56 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.
As a certified reference material (CRM), 4-Chloro-2,6-pyridinedicarboxylic 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 | C7H4ClNO4 |
| Molecular Weight | 201.56 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 methanol, ethanol, DMSO, water |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 5-Chloro-2-hydroxy-3-nitrobenzaldehyde (CAS 16634-90-5)
- 2-Chloro-6-hydroxy-3-nitrobenzaldehyde (CAS 38226-05-0)
- 2-Chloro-6-nitrobenzoic acid (CAS 5344-49-0)
- 3-chloro-2-nitrobenzoic acid (CAS 4771-47-5)
- 3-Chloro-4-hydroxy-5-nitrobenzaldehyde (CAS 98555-61-4)
- 3-Chloro-4-nitrobenzoic acid (CAS 39608-47-4)
- 3-Chloro-6-hydroxy-2-nitrobenzaldehyde (CAS 412336-53-9)
- 4-chloro-2-nitrobenzoic acid (CAS 6280-88-2)
Recommended Standards
- 3-Hydroxy-4-nitrobenzoyl chloride (CAS 36852-58-1)
- 4-Chloro-5-hydroxy-2-nitrobenzaldehyde (CAS 873983-83-6)
- 4-Chloropyridine-2,3-dicarboxylic acid (CAS 605661-85-6)
- 4-Cyano-2,5-difluorobenzoyl chloride (CAS 198280-44-3)
- 5-Hydroxy-4-methyl-2H-thiopyran-3(6H)-one (CAS 61363-72-2)
- N-Nitroso Aminophyllie (CAS CATO-C4X-182313)
- N-(2-(Dimethylamino)-2-(furan-2-yl)ethyl)benzo[c][1,2,5]thiadiazole-5-carboxamide (CAS 1208823-87-3)
- 3-methyl-4-phenylpiperidine (CAS 57420-07-2)
- spiro[azetidine-3,2'-indane] (CAS 1936301-30-2)
- 2-(((Benzyloxy)carbonyl)amino)-2-(1-(tert-butoxycarbonyl)azetidin-3-yl)acetic acid (CAS 1219354-19-4)
- trans-2-(4-Fluorobenzoyl)cyclopentane-1-carboxylic acid (CAS 733741-06-5)
- Methyl 2-(7-chloro-4-oxoquinolin-1(4H)-yl)acetate (CAS 1235261-26-3)
- Brivaracetam Impurity 177 (CAS CATO-C4X-2007177)
- D-Pro36-Tirzepatide (CAS CATO-CPTD788903)
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