7-Chloro-3-oxo-2h,3h,4h-pyrido[3,2-b][1,4]oxazine-6-carboxylic acid CAS 877177-24-7
| CAS No. | 877177-24-7 |
| Molecular Formula | C8H5ClN2O4 |
| Molecular Weight | 228.59 g/mol |
| 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 7-Chloro-3-oxo-2h,3h,4h-pyrido[3,2-b][1,4]oxazine-6-carboxylic acid.
7-Chloro-3-oxo-2h,3h,4h-pyrido[3,2-b][1,4]oxazine-6-carboxylic acid (CAS 877177-24-7), molecular formula C8H5ClN2O4 and molecular weight 228.59 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H5ClN2O4, 7-Chloro-3-oxo-2h,3h,4h-pyrido[3,2-b][1,4]oxazine-6-carboxylic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 228.59 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), 7-Chloro-3-oxo-2h,3h,4h-pyrido[3,2-b][1,4]oxazine-6-carboxylic 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 | C8H5ClN2O4 |
| Molecular Weight | 228.59 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.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
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- 5-Chloro-7-nitro-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 1802660-24-7)
- 2-(6-Chloro-2-oxo-1H-purin-9(2H)-yl)acetic acid (CAS 672961-85-2)
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Recommended Standards
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- 2-(4-Bromo-2H-indazol-3-yl)acetic acid (CAS 1306603-77-9)
- 3-((4-Chlorobenzyl)amino)propan-1-ol hydrochloride (CAS 1269104-92-8)
- 2-Methoxy-4-morpholinomethyl benzophenone (CAS 898769-68-1)
- Ethyl 2-(4-chlorophenyl)-2-oxoacetate (CAS 34966-48-8)
- 6-Nitroquinoline-2-carbaldehyde (CAS 59500-67-3)
- Methyl 6-bromo-2,3-dimethylbenzoate (CAS 5613-30-9)
- 3-Formyl-5-(trifluoromethyl)benzoic acid (CAS 604001-03-8)
- D-Tyr1-Tirzepatide (CAS CATO-CPTD788928)
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