4-Oxo-4H-pyrano[2,3-c]pyridine-2-carboxylic Acid Hydrochloride CAS 1909313-31-0
| CAS No. | 1909313-31-0 |
| Molecular Formula | C9H5NO4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Oxo-4H-pyrano[2,3-c]pyridine-2-carboxylic Acid Hydrochloride (CAS 1909313-31-0) is a high-purity analytical reference standard with the molecular formula C9H5NO4HCl and a molecular weight of 227.60 g/mol.
4-Oxo-4H-pyrano[2,3-c]pyridine-2-carboxylic Acid Hydrochloride (C9H5NO4HCl) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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 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.
As a certified reference material (CRM), 4-Oxo-4H-pyrano[2,3-c]pyridine-2-carboxylic Acid Hydrochloride 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 | C9H5NO4 HCl |
| Molecular Weight | 227.60 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 sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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 | 1 |
Recommended Standards
- Ethyl 7-bromobenzofuran-2-carboxylate (CAS 1033201-65-8)
- Methyl Imidazo[1,2-a]pyridine-5-carboxylate (CAS 88047-55-6)
- (5R,6R)-5-Amino-1-methyl-6-(1-methyl-1H-pyrazol-5-yl)piperidin-2-one (CAS 1820580-56-0)
- 6-((3-(Diethylamino)propyl)amino)-[3,4'-bipyridine]-5-carbonitrile (CAS 108610-89-5)
- 3,5-Difluoro-2-methylaniline hydrochloride (CAS 2174008-07-0)
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- 2-(2-Bromophenyl)-2-methyloxetane (CAS 1402244-01-2)
- (5-Fluoro-2-(trifluoromethoxy)phenyl)methanol (CAS 1092460-86-0)
- N-(7-mercaptobenzo[c][1,2,5]oxadiazol-4-yl)acetamide (CAS 254973-02-9)
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