2-(6-Chloro-3-oxo-3,4-dihydro-2h-1,4-benzoxazin-2-yl)acetic acid CAS 876660-88-7
| CAS No. | 876660-88-7 |
| Molecular Formula | C10H8ClNO4 |
| Molecular Weight | 241.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(6-Chloro-3-oxo-3,4-dihydro-2h-1,4-benzoxazin-2-yl)acetic acid (CAS 876660-88-7), molecular formula C10H8ClNO4 and molecular weight 241.63 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-(6-Chloro-3-oxo-3,4-dihydro-2h-1,4-benzoxazin-2-yl)acetic acid (C10H8ClNO4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 241.63 g/mol, it falls into the medium-molecular-weight range. 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), 2-(6-Chloro-3-oxo-3,4-dihydro-2h-1,4-benzoxazin-2-yl)acetic 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 | C10H8ClNO4 |
| Molecular Weight | 241.63 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 | 1 |
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Recommended Standards
- 2-(6-Chloro-3-oxo-2H-benzo[b][1,4]oxazin-4(3H)-yl)acetic acid (CAS 26494-58-6)
- 2-Chloro-4-(methoxymethyl)-6-methyl-5-nitropyridine-3-carbonitrile (CAS 719-48-2)
- 2-(6-Chloro-2-oxo-3,4-dihydro-2h-1,4-benzoxazin-4-yl)acetic acid (CAS 99074-37-0)
- 2-Chloro-N-(7-hydroxy-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)acetamide (CAS 876717-51-0)
- (S)-1-(Hydroxymethyl)-5-isopropylpyrrolidin-2-one (CAS 149495-13-6)
- (5-(Thiophen-2-yl)isoxazol-3-yl)methyl 2-(2-methoxyphenoxy)acetate (CAS 946347-02-0)
- 1-tert-butyl-6-hydrazinyl-1H,4H,5H-pyrazolo[3,4-d]pyrimidine (CAS 1311316-97-8)
- 2-([1,2,4]Triazolo[1,5-a]pyridin-6-yl)-1-(6-methylpyridin-2-yl)ethan-1-one (CAS 614750-82-2)
- [(2,3-difluorophenyl)methyl][(1-methyl-1h-pyrazol-4-yl)methyl]amine (CAS 1006472-90-7)
- 3-Hydroxy-2-(methylthio)benzamide (CAS 1243456-11-2)
- 2-Cyclopropoxy-1-nitro-3-(trifluoromethyl)benzene (CAS 1243408-94-7)
- 5-[(3-methoxyphenyl)amino]-1,3,4-thiadiazole-2-thiol (CAS 68161-58-0)
- (S)-tert-Butyl 1-(cyclopentylmethyl)pyrrolidin-3-ylcarbamate (CAS 1286208-59-0)
- [Formaldehyde Schiff-base]-Semaglutide Impurity 136 X TFA Salt (CAS CATO-C4X-2226136)
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