5-Methyl-3-nitropicolinaldehyde CAS 52381-07-4
| CAS No. | 52381-07-4 |
| Molecular Formula | C7H6N2O3 |
| Molecular Weight | 166.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Methyl-3-nitropicolinaldehyde (CAS 52381-07-4), molecular formula C7H6N2O3 and molecular weight 166.13 g/mol, is a CATO reference standard with documented purity and traceability.
5-Methyl-3-nitropicolinaldehyde (C7H6N2O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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).
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.
As a certified reference material (CRM), 5-Methyl-3-nitropicolinaldehyde 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 | C7H6N2O3 |
| Molecular Weight | 166.13 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Nitrogen Atoms | 2 |
Related Methyl Standards
Recommended Standards
- 5-Methoxybenzofurazan-1-oxide (CAS 7791-49-3)
- 5-Nitro-2,3-dihydrofuro[3,2-b]pyridine (CAS 95837-10-8)
- 5-Methoxybenzofurazan 3-oxide (CAS 3524-06-9)
- 6,7-Difluoroquinoxaline (CAS 215734-58-0)
- 5,6-Dichlorobenzo[d]thiazol-2-amine (CAS 24072-75-1)
- indoline-7-carbaldehyde (CAS 143262-21-9)
- 3-Amino-4-(3,5-bis(trifluoromethyl)phenyl)butanoic acid (CAS 1391230-73-1)
- Triethylamine Phosphate (CAS 35365-94-7)
- [3-amino-4-(trifluoromethyl)phenyl]methanol (CAS 372120-51-9)
- 15-Mercaptopentadecanoic acid (CAS 184639-70-1)
- 3,3-Bis(triethylsilyl)acrylaldehyde (CAS 1421789-57-2)
- 4-(2-Phenyl-1,3-thiazol-5-yl)pyrimidin-2-amine (CAS 338414-61-2)
- 4-Methylbenzenesulfinyl Chloride (CAS 10439-23-3)
- Acetyl tetrapeptide-9(Dermican LS 9837) (CAS 928006-50-2)
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