Methyl 3-aminobenzo[d]isoxazole-5-carboxylate CAS 737802-51-6
| CAS No. | 737802-51-6 |
| Molecular Formula | C9H8N2O3 |
| Molecular Weight | 192.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Methyl 3-aminobenzo[d]isoxazole-5-carboxylate 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.
Methyl 3-aminobenzo[d]isoxazole-5-carboxylate (CAS 737802-51-6), molecular formula C9H8N2O3 and molecular weight 192.17 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Methyl 3-aminobenzo[d]isoxazole-5-carboxylate (C9H8N2O3) 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).
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.
Physical & Chemical Properties
| Molecular Formula | C9H8N2O3 |
| Molecular Weight | 192.17 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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 2 |
Related Methyl Standards
- Methyl 2-aminobenzo[d]oxazole-4-carboxylate (CAS 1007112-51-7)
- Methyl 5-aminobenzo[d]oxazole-2-carboxylate (CAS 1035093-77-6)
- 2-(2-Aminobenzo[d]oxazol-6-yl)acetic acid (CAS 1453089-60-5)
- 2-(2-Aminobenzo[d]oxazol-5-yl)acetic acid (CAS 1453089-83-2)
- 2-(4-Aminobenzo[d]oxazol-2-yl)acetic acid (CAS 1555879-95-2)
- 2-(2-Aminobenzo[d]oxazol-7-yl)acetic acid (CAS 1803740-24-0)
- Methyl 2-aminobenzo[d]oxazole-5-carboxylate (CAS 56388-02-4)
- methyl 3-aminobenzo[d]isoxazole-6-carboxylate (CAS 501904-27-4)
Recommended Standards
- Methyl 3-(2-furyl)-1H-pyrazole-5-carboxylate (CAS 34042-72-3)
- Methyl 2-Oxo-2,3-dihydrobenzimidazole-4-carboxylate (CAS 860187-45-7)
- Methyl 3-hydroxy-1H-indazole-4-carboxylate (CAS 787581-35-5)
- Methyl 2-oxo-2,3-dihydro-1H-pyrrolo[2,3-c]pyridine-4-carboxylate (CAS 2361643-89-0)
- 4-Propylbenzene-1,2-diamine (CAS 346001-28-3)
- 4-((4-(Allyloxy)phenyl)sulfonyl)phenol (CAS 97042-18-7)
- Ethyl 2-(4-oxoquinazolin-1(4H)-yl)acetate (CAS 105234-34-2)
- 4-Chloro-2-cyclobutyl-6,7-dihydro-5h-cyclopenta[4,5]thieno[2,3-d]pyrimidine (CAS 1483172-25-3)
- 1-(((2-Aminophenyl)thio)methyl)cyclopentan-1-ol (CAS 1493269-45-6)
- 4-Methoxy-[2,2'-bipyridine] 1-oxide (CAS 14163-05-4)
- 2,3,3',4',5-Pentachloro-4-Biphenylol (CAS 152969-11-4)
- Tert-butyl 2-(4-chlorobenzoyl)hydrazine-1-carboxylate (CAS 351893-11-3)
- Clindamycin Impurity 144 (CAS CATO-C4X-1341144)
- Liraglutide Impurity 5 TFA Salt (CAS CATO-C4X-19925)
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