6,7-Dihydro-4H-pyrano[3,4-d]oxazole-2-carboxylic acid, lithium salt CAS 2306263-59-0
| CAS No. | 2306263-59-0 |
| Molecular Formula | C7H7NO4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 6,7-Dihydro-4H-pyrano[3,4-d]oxazole-2-carboxylic acid, lithium salt.
6,7-Dihydro-4H-pyrano[3,4-d]oxazole-2-carboxylic acid, lithium salt (CAS 2306263-59-0), molecular formula C7H7NO4Li and molecular weight 176.08 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 6,7-Dihydro-4H-pyrano[3,4-d]oxazole-2-carboxylic acid, lithium salt (C7H7NO4Li) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 6,7-Dihydro-4H-pyrano[3,4-d]oxazole-2-carboxylic acid, lithium salt 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 | C7H7NO4 Li |
| Molecular Weight | 176.08 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Nitrogen Atoms | 1 |
Related Dihydro Standards
- 3-(3,6-Dihydro-2h-pyran-4-yl)benzoic acid (CAS 1000016-95-4)
- 1,7-Dihydro-dipyrrolo[2,3-b:3',2'-e]pyridine (CAS 1000342-79-9)
- Methyl 9,10-Dihydro-9-oxoacridine-4-carboxylate (CAS 100039-03-0)
- 3-(3,4-Dihydro-2h-benzo[b][1,4]dioxepin-7-yl)propan-1-ol (CAS 1000540-71-5)
- 2,5-Dihydro-1-(2-nitrophenyl)-5-oxo-1H-1,2,4-triazole-3-carboxylic acid dimethylamide (CAS 1000574-24-2)
- 5-(1,2-Dihydro-[1,1':4',1''-terphenyl]-2-yl)-3H-1,2,4-triazol-3-one (CAS 1000575-71-2)
- Ethyl 2,5-dihydro-5-oxo-1-[3-(trifluoromethyl)phenyl]-1H-1,2,4-triazole-3-carboxylate (CAS 1000576-65-7)
- 2,5-Dihydro-5-oxo-1-phenyl-1H-1,2,4-triazole-3-carboxylic acid (2-chlorophenyl)amide (CAS 1000576-93-1)
Recommended Standards
- 2-(5-Cyano-3-pyridyl)acetic Acid (CAS 1211531-62-2)
- Fmoc-HoCys(Mob)-OH (CAS 2044710-98-5)
- 5-Ethoxyimidazo[1,2-a]pyridine (CAS 3323-80-6)
- (1R)-1-(2-Methyl-2,3-dihydro-1-benzofuran-5-yl)ethan-1-ol (CAS 1568407-43-1)
- Rebamipide Impurity 68 (CAS CATO-C4X-152368)
- 2-Bromo-6-chloro-[1,2,4]triazolo[1,5-a]pyridine (CAS 1782238-57-6)
- 6-Hydroxy-2-methyl-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 928256-39-7)
- 2-Bromo-5-ethylpyridine (CAS 19842-08-1)
- n,5-Dimethyl-1,2-oxazol-3-amine (CAS 55809-40-0)
- Acetyl Dipeptide-1 (CAS 196604-48-5)
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